HomeBlogHair LossCauses of Hair LossWhat Causes Covid Hair Loss? Understanding Telogen Effluvium

What Causes Covid Hair Loss? Understanding Telogen Effluvium

As the world continues to navigate the impacts of the COVID-19 pandemic, an unexpected concern has emerged for many recovering patients: hair loss. Questions like “can COVID cause hair loss?” have become increasingly common, shedding light on a condition that is not just a matter of aesthetics but also of emotional and psychological wellbeing. Indeed, the links between COVID-19, its vaccines, and subsequent hair loss are topics that demand attention for their widespread implications and the distress they cause among those affected.

This article aims to dissect the intricate relationship between COVID-19 and hair loss, primarily focusing on a condition known as Telogen Effluvium—a form of temporary hair shedding. We will explore how COVID-19 triggers this condition, the risk factors that may predispose individuals to experience hair loss following a COVID infection or vaccination, and whether such hair loss signifies a long-term consequence of the virus. Additionally, the discussion will extend to addressing the duration of COVID-19 associated hair loss, available treatments, and when it might be necessary to consult a dermatologist. By providing a comprehensive overview, our goal is to arm readers with knowledge and strategies to manage this unnerving yet manageable aftermath of COVID-19.

Understanding Telogen Effluvium

Telogen effluvium is a common form of hair loss characterized by diffuse, non-scarring shedding of hair. This condition primarily affects the scalp and is often triggered by significant stressors or changes to the body. It involves an abnormal shift in the hair growth cycle, predominantly causing an excessive number of hairs to enter the resting phase, known as the telogen phase, prematurely.

Hair Growth Cycle and Telogen Effluvium

A typical hair follicle undergoes three phases: the growth phase (anagen), the transition phase (catagen), and the resting phase (telogen). Under normal conditions, about 90% of hair is in the anagen phase, which can last two to five years, allowing hair to grow continuously. The catagen phase lasts about two to three weeks, during which the hair follicle shrinks and hair growth slows. Finally, during the telogen phase, which lasts around three to five months, the hair rests.

In telogen effluvium, a significant stressor such as illness, hormonal changes, or emotional stress can cause hair follicles to exit the anagen phase too early and enter the telogen phase. Consequently, this leads to an increased shedding of hair, typically observed two to three months after the initial stressor.

Types of Telogen Effluvium

There are two main types of telogen effluvium: acute and chronic. Acute telogen effluvium is temporary and usually resolves within six months, with hair loss occurring abruptly two to three months following the stressor. Chronic telogen effluvium, on the other hand, persists for longer than six months and may not have a clearly identifiable trigger. This form can cause more widespread thinning and is often more distressing to the individual.

Causes and Triggers

Various factors can initiate telogen effluvium, including physiological stress from surgery or severe illness, emotional stress, nutritional deficiencies, and certain medications. Commonly implicated drugs include beta-blockers, retinoids, and some types of antidepressants. Additionally, hormonal changes during postpartum periods or from thyroid imbalances can also precipitate this condition.

Impact on Well-being

While telogen effluvium primarily affects the hair and is not associated with severe physical health consequences, it can significantly impact an individual’s psychological and social well-being. The sudden appearance of hair loss can lead to stress, anxiety, and depression, further exacerbating the condition.

Understanding telogen effluvium involves recognizing the interplay between physiological factors and emotional well-being. By identifying the underlying causes and managing stress, individuals can effectively address the symptoms and often see a reversal of hair loss. It is essential for those experiencing persistent or severe symptoms to consult with a healthcare provider, who can offer guidance on appropriate treatments and interventions.

The Relationship Between COVID-19 and Telogen Effluvium

Telogen effluvium (TE) has emerged as a notable consequence of the COVID-19 pandemic, with the virus triggering more frequent instances of this condition due to increased medication use and stress. The stress associated with the pandemic, whether due to the illness itself or the psychological impact of the situation, plays a significant role in the onset of TE. It is important to understand that the shift from the anagen phase (growth) to the telogen phase (resting) in hair follicles is often accelerated by the physiological and psychological stresses imposed by COVID-19.

Delayed Onset

The onset of hair loss, specifically TE, following a COVID-19 infection typically manifests several weeks after the initial symptoms of the virus. Research indicates that the average duration from the onset of COVID-19 symptoms to the appearance of acute TE is approximately 74 days, which is notably earlier than the classic acute TE that generally follows other types of illnesses or stressors. This earlier onset suggests a unique interaction between COVID-19 related stressors and the hair growth cycle.

Impact of Stress

The pandemic’s mental and psychological effects are profound, exacerbating the stress experienced during such unprecedented times. This heightened stress can lead to an increase in the number of hair follicles entering the telogen phase prematurely. Notably, studies have shown that a significant percentage of patients begin to develop hair-related symptoms within the first month of a COVID-19 diagnosis, with a considerable number continuing to experience symptoms after 12 weeks. The relationship between stress and hair cycle changes is so impactful that it has led to the conceptualization of the “brain-hair follicle axis,” where specific neuropeptides and hormones released due to stress may encourage the shift of hair from the growth phase to the shedding phase.

Understanding the relationship between COVID-19 and telogen effluvium is crucial for addressing this condition effectively.

 Recognizing the triggers and managing stress can help mitigate the severity of hair loss and aid in the recovery process. For individuals experiencing persistent or severe hair loss, consulting with a healthcare provider is advisable to explore potential treatments and interventions tailored to their specific needs.

Risk Factors for COVID-19 Hair Loss

Understanding the risk factors for COVID-19-related hair loss is crucial for addressing and managing this condition effectively. Several factors have been identified that may increase the likelihood of experiencing hair loss following a COVID-19 infection. These include gender differences, nutritional deficiencies, and the state of the immune system.


Research indicates that women are more susceptible to COVID-19-related hair loss compared to men. Studies have shown that a significant percentage of women infected with COVID-19 experience hair shedding. This disparity may be due to several factors, including hormonal differences and the fact that women are more likely to notice and report hair loss due to longer hair lengths. Additionally, women often face unique stressors such as childbirth and lactation, which can exacerbate the risk of telogen effluvium, the medical term for the type of hair loss associated with COVID-19.

Nutritional Deficiencies

Nutritional status plays a critical role in hair health, and deficiencies in key nutrients can precipitate hair loss. Individuals who have had COVID-19 might experience nutritional deficiencies due to decreased appetite, prolonged illness, or increased nutritional requirements during recovery. Specific nutrients that are crucial for hair growth include iron, biotin, and vitamin D. An inadequate intake of these nutrients can lead to weakened hair follicles and increased hair shedding. It is important for those recovering from COVID-19 to ensure a balanced diet that supports hair health, potentially supplemented by vitamins as recommended by healthcare providers.

Weakened Immune System

Individuals with weakened immune systems are at a higher risk of severe infections and may experience more pronounced symptoms and complications, including hair loss. The immune system plays a vital role in regulating the hair growth cycle, and disruptions caused by COVID-19 can lead to telogen effluvium. For those who are immunocompromised, maintaining robust protective measures against COVID-19 is crucial. This includes adhering to recommended vaccinations and practicing enhanced precautions during periods of high transmission to minimize the risk of infection and its subsequent effects, such as hair loss.

By recognizing these risk factors, individuals can take proactive steps to mitigate the impact of COVID-19 on their hair health. Consulting with healthcare professionals can provide further guidance on effective strategies tailored to individual needs and circumstances.

Is COVID-19 Hair Loss Permanent?

Months after recovering from COVID-19, many individuals report experiencing significant hair shedding, often described as hair falling out in large clumps. This phenomenon, primarily linked to the stress of illness or fever associated with COVID-19, is known as telogen effluvium. It is crucial to understand that this condition does not lead to permanent hair loss but rather a temporary phase of increased hair shedding.

Telogen effluvium occurs when a higher than normal number of hairs enter the telogen, or resting, phase of the hair growth cycle simultaneously. Typically, this shift is triggered by the body’s response to stress, whether from fever, illness, or emotional distress, such as that caused by the pandemic. The hair shedding usually becomes noticeable two to three months after the initial stressor and can last between six to nine months. During this period, individuals may observe handfuls of hair coming out while showering or brushing their hair.

It is important to note that telogen effluvium does not involve the loss of hair follicles. The follicles remain intact, and hair growth resumes once the body recovers from the stress.

 The recovery phase is characterized by the regrowth of hair, where new strands begin to fill in, typically restoring the hair’s normal fullness within six to nine months after the shedding ceases. Patients might notice short hairs growing along their hairline, all of which are approximately the same length, indicating new growth.

In cases where emotional stress is the trigger, similar patterns of hair shedding and regrowth occur. Hair loss begins about two to three months following the onset of stress, underscoring the impact of psychological factors on physical health, including hair condition.

While the majority of telogen effluvium cases resolve within a few months, a small percentage of patients may experience chronic telogen effluvium, where hair shedding persists beyond six months. This condition can last from a few months up to a couple of years, though it typically does not result in complete baldness since the proportion of resting hairs does not exceed 50 percent of the scalp’s total hair count. In such scenarios, medical therapy may be employed to manage symptoms, though the primary advice remains supportive care and patience.

In summary, while COVID-19-related hair loss can be distressing, it is generally not permanent. Understanding the nature of telogen effluvium and recognizing the typical recovery timeline can help alleviate concerns and guide individuals through the process of regaining their hair’s normal condition. For those experiencing prolonged or severe hair shedding, consulting a dermatologist is advisable to explore potential treatments and ensure proper management of the condition.

How Long Does COVID-19 Hair Loss Last?

The duration of hair loss following a COVID-19 infection can vary significantly among individuals, but it generally follows a predictable timeline based on the nature of telogen effluvium. According to research, the onset of hair shedding tends to occur somewhat sooner in COVID-19 patients than in those experiencing telogen effluvium due to other causes. Typically, shedding begins about two months after the initial stressor, such as a fever or severe illness associated with COVID-19, rather than the usual three months.

Most cases of telogen effluvium related to COVID-19 resolve within three to six months.

 This period allows for the shedding of hairs that were prematurely pushed into the telogen phase during the acute stress of the illness. Once this phase concludes, the hair follicles remain intact, which is crucial as it means that the hair can and will regrow. Recovery is marked by the gradual return of hair density, as new hair grows at an average rate of about one centimeter per month. However, for individuals with longer hair, it may take over two years for hair to regain its original length and for a ponytail to feel full again.

In a minority of cases, specifically less than 10 percent, individuals may experience chronic telogen effluvium. This condition can persist for months or even years and is characterized by prolonged periods of hair shedding without an identifiable trigger. Chronic telogen effluvium is particularly challenging to manage and often requires medical intervention to treat symptoms effectively.

For those experiencing prolonged effects of telogen effluvium post-COVID-19, it is also important to consider the impact of long COVID. Ongoing bodily stress and recovery from long-term symptoms can exacerbate hair loss. In these cases, while the hair loss may be more persistent, it is important to note that the total loss does not usually exceed 50 percent of scalp hair, ensuring that complete baldness is unlikely.

Overall, while the experience of hair loss can be distressing, understanding that it is generally a temporary and reversible condition can provide reassurance. Individuals are encouraged to consult healthcare professionals if their hair loss persists or if they have concerns about their recovery, as tailored treatments and interventions may be necessary to support the regrowth process and manage any underlying health issues.


Managing hair loss effectively starts with understanding that treating conditions like stress-induced shedding requires time and patience. As health professionals often reassure, stress-related hair loss, particularly telogen effluvium, is a self-limited condition. This means that while the hair loss may seem severe, it is typically temporary and reversible. 

Individuals experiencing this type of hair loss should monitor their progress and maintain a positive outlook, knowing that recovery is not only possible but expected.

Managing Stress Levels

To address and potentially reverse stress-related hair loss, implementing effective stress management techniques is crucial. Here are several strategies that have been found beneficial:

  1. Regular Sleep Patterns: Ensuring seven to nine hours of sleep per night is fundamental. Sleep plays a critical role in physical health and emotional well-being, affecting how one handles stress.
  2. Yoga and Meditation: These practices are highly effective in reducing stress. Engaging in yoga through classes or online platforms can offer both physical and mental relief. Similarly, meditation, including guided sessions available on platforms like YouTube, helps in focusing the mind and reducing stress levels.
  3. Deep Breathing Exercises: Techniques such as box breathing, alternate nostril breathing, and the 4-7-8 method are accessible ways to manage stress daily. These exercises aid in focusing the mind and calming the body.
  4. Journaling: Writing down thoughts and feelings can significantly quiet the mind and reduce stress. Whether it’s through a traditional diary or digital means, journaling serves as a therapeutic outlet for emotional release.
  5. Spending Time Outdoors: Engaging with nature can be incredibly soothing and acts as a natural stress reliever. Activities like walking, exercising, or meditating outdoors can enhance this effect.
  6. Professional Help: For those facing overwhelming stress, consulting a licensed therapist or mental health counselor can be invaluable. These professionals can provide tailored advice and coping strategies to manage stress effectively.
  7. Creating a Positive Environment: Especially for those working from home, it is important to establish a workspace that promotes well-being. Simple changes like organizing the space, incorporating pleasant aromas, or adjusting the lighting can make a significant difference.
  8. Muscle Tensing and Relaxation Exercises: Learning to recognize body tension and practicing muscle relaxation can help in managing physical symptoms of stress. This technique involves tensing and then relaxing different muscle groups, which can also aid in better sleep.

By integrating these stress management techniques into daily routines, individuals can not only address hair loss but also improve their overall quality of life. It’s essential to remember that reducing stress is not just about preventing hair loss but also about fostering a healthier, more balanced lifestyle.

Medical and Supplementary Treatments for COVID-19 Hair Loss


The use of Minoxidil stands out as a pivotal treatment in addressing COVID-19-related hair loss, particularly for patterns like androgenetic alopecia. It enhances blood flow in the scalp and transitions hair follicles from a resting phase to active growth. It is recommended that women use a 2% solution of Minoxidil, while men may benefit from a 5% solution. This medication not only treats alopecia areata and prolonged telogen effluvium but also diminishes the risk of the condition becoming chronic and leading to permanent hair loss.

Additionally, hair regrowth treatment serums enriched with active ingredients such as Rosemary leaf oil, Panax ginseng root, and Saw palmetto berry extract provide a topical solution to encourage hair growth. These ingredients work synergistically to strengthen circulation, reduce follicle miniaturization, and prevent hormonal impacts on hair growth cycles.


Nutritional supplementation plays a crucial role in mitigating post-COVID-19 hair loss. Essential vitamins and minerals have been identified to support hair health and regrowth. Vitamin D, known for its role in modulating keratinocyte proliferation and hair growth cycling, is critical, especially when low serum levels are detected. Similarly, Vitamin E serves as a powerful antioxidant that enhances hair growth by reducing oxidative stress within hair follicles.

Iron and Zinc are vital minerals; their supplementation is recommended when deficiencies are detected. Iron helps in regrowth by improving oxygen delivery to the scalp, and Zinc is crucial for hair follicle recovery. Oral supplementation of these minerals can significantly benefit individuals with post-COVID-19 hair loss, particularly when their serum levels are below the recommended thresholds.

Marine-derived nutraceuticals, containing elements like hydrolyzed marine collagen and shark powder, have shown promising results in enhancing hair regrowth and reducing hair shedding. These supplements work by providing bioactive substances that support hair health, although their exact mechanisms of action are still being studied.

Incorporating a holistic approach that includes both medications and supplements can significantly improve outcomes for individuals experiencing hair loss due to COVID-19.

When to See a Dermatologist

If individuals notice that their hair loss extends beyond the typical symptoms of telogen effluvium, such as excessive shedding without other scalp conditions, it may be time to consult a dermatologist. Key indicators that warrant a professional evaluation include the presence of a rash, an itchy scalp, or a sensation of burning, which could suggest conditions other than telogen effluvium.

Dermatologists are experts in hair loss and can provide a comprehensive assessment to determine the underlying causes. If the hair loss occurs sooner than the typical three months following an inciting event like a COVID-19 infection—sometimes as early as two months—it’s advisable to seek expert advice. Additionally, if recovery does not follow the expected timeline of three to six months, or if the hair loss significantly impacts emotional well-being, consulting with a dermatologist is crucial.

In cases where hair loss persists beyond six months, known as chronic telogen effluvium, a dermatologist’s intervention becomes even more critical. This prolonged phase of hair shedding may require medical therapy to manage symptoms effectively. It’s important for patients to understand that while the condition is distressing, the proportion of hair in the telogen phase typically does not exceed 50 percent, thus complete baldness is unlikely.

Patients are encouraged to actively participate in monitoring their condition. Tools like the 60-second hairbrush test, where hairs are collected and counted after brushing, can be useful for tracking shedding over time. This self-monitoring can be a valuable part of managing the condition, alongside professional medical advice.

Dermatologists can also address the psychological impact of hair loss, providing reassurance and strategies for managing stress, which is often a significant contributor to hair shedding. By understanding the specific needs and concerns of their patients, dermatologists play a pivotal role in the recovery and management of hair loss post-COVID-19.


Navigating through the complexities of COVID-19-related hair loss with understanding and care, we’ve uncovered that while telogen effluvium can be a distressing symptom, it is generally temporary and manageable with the right approach. The journey from recognizing the first signs of hair shedding to fully embracing the regrowth process embodies a path of patience, resilience, and informed action. It is essential to remember that, though the experience of losing hair can be profoundly emotional, there is a community of medical professionals ready to support and guide you through recovery. Consulting with healthcare professionals can offer peace of mind and clarity, ensuring that each step towards regaining your hair health is taken with confidence.

Amidst understanding the intricacies of telogen effluvium and embracing strategies for stress management and medical treatment, the importance of seeking expert advice cannot be overstated. Whether you’re just starting to notice thinning or are in the midst of navigating chronic telogen effluvium, personalized attention from specialists can make a significant difference. : Get a Free Hair Analysis and Quote. Our experts will assess your hair loss condition and provide you with a detailed plan tailored to your needs, equipping you with the knowledge and tools necessary for regrowth. In this journey, the blend of professional guidance and personal resilience shines a light on the path to restoration, reminding us that while the challenge of hair loss is profound, the possibility of recovery and renewal is firmly within reach.


What are the characteristics of hair loss due to COVID-19?

Hair loss related to COVID-19 typically manifests as Telogen Effluvium (TE), which is a diffuse, non-scarring hair loss affecting less than half of the hair on the scalp. This condition usually appears 2–3 months following a stressful event, such as a severe illness, and may resolve on its own. However, if the condition persists for more than six months, it is considered chronic. Individuals experiencing this type of hair loss often feel anxious and concerned about their hair condition.

What treatments are available for hair loss after recovering from COVID-19?

Post-COVID-19 hair loss generally shows signs of gradual improvement over time. During this recovery phase, the application of topical minoxidil can be beneficial. Minoxidil is known to promote hair regrowth and help maintain hair density.

Can hair loss from COVID-19 be permanent?

Most cases of hair loss following COVID-19 infection are potentially reversible and may not require specific treatment. However, a small percentage of patients might experience permanent hair loss, with the underlying causes still not fully understood.

Which vitamin deficiencies are linked to hair loss?

Hair loss can be associated with deficiencies in several specific vitamins including riboflavin (Vitamin B2), biotin, folate, and vitamin B12. Riboflavin is crucial as it is part of essential coenzymes that play significant roles in cellular processes. Deficiencies in these vitamins can lead to hair loss, emphasizing the importance of maintaining adequate levels through diet or supplements.

Fahmida is an intern doctor in Bangladesh with eight high-impact publications in Q1 journals on emerging health issues and was awarded the “Inspiring Women Volunteer Award” in 2022 by the UN Bangladesh.

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