Can Stress Cause Hair Loss? A Simple Explanation

Medically reviewed by Dr Margo Gkini, Consultant Dermatologist, MD, MSc, PhD, FRCP - August 2026

1. Can Stress Cause Hair Loss?

Yes. Stress can cause hair loss – but not always in the way people think.

Physical or emotional stress can disrupt the normal hair growth cycle, causing more hairs than usual to enter the resting (telogen) phase before shedding several weeks or months later. This condition is known as telogen effluvium and is one of the most common causes of temporary hair loss.

However, stress does not directly cause male or female pattern hair loss. Instead, it can make existing thinning more noticeable or reveal hair loss that was already developing.

Understanding the difference between stress-related shedding and pattern hair loss is important because each requires a different treatment approach.

2. How Does Stress Affect Hair Growth?

Hair follicles are highly sensitive to changes occurring elsewhere in the body.

When someone experiences significant physical or emotional stress, the body prioritises essential functions over processes such as hair growth.

This shift can interrupt the normal hair cycle, causing a larger proportion of hairs to leave the growth (anagen) phase and enter the resting (telogen) phase prematurely.

Several weeks later, those hairs are shedding. 

Unlike pattern hair loss, the follicles themselves remain healthy and capable of producing new hair.

3. What Types of Stress Can Trigger Hair Loss?

Many different forms of stress can trigger telogen effluvium.

Common examples include:

• Major illness or infection

• Surgery

• Childbirth

• Rapid weight loss

• Bereavement

• Relationship breakdown

• Work-related stress

• Significant emotional trauma

In some people, several smaller stressors occurring together may also be enough to trigger increased shedding.

4. When Does Stress-Related Hair Loss Start?

One of the most confusing aspects of stress-related hair loss is its timing.

Hair shedding usually begins two to three months after the stressful event, not immediately afterwards.

This delay often makes it difficult to identify the original trigger.

For example, someone who experienced a serious illness in January may not notice increased shedding until March or April.

5. What Does Stress-Related Hair Loss Look Like?

Stress-related hair loss usually causes diffuse shedding. This means hair falls evenly from across the scalp rather than from one specific area.

Common signs include:

• More hair in the shower

• Increased hair on brushes or pillows

• A thinner ponytail

• Reduced overall hair volume

• Hair shedding from all areas of the scalp

Unlike pattern hair loss, it does not usually cause a receding hairline or widening part line.

To learn more about different causes of hair loss, read What Are the Most Common Types of Hair Loss? A Simple Explanation.

6. Does Stress Cause Male or Female Pattern Hair Loss?

No.

Current evidence suggests that stress does not directly cause androgenetic alopecia (male or female pattern hair loss).

Pattern hair loss is driven primarily by:

• Genetics

• Hormones

• Hair follicle sensitivity to DHT (in androgenetic alopecia)

However, stress can make existing pattern hair loss appear worse.

For example, someone with early male or female pattern hair loss may experience a period of stress-related shedding, making underlying thinning much more noticeable.

This is one reason why it’s important to seek a professional assessment if hair loss persists.

Related reading:

• What Is Male Pattern Hair Loss? A Simple Explanation

• What Is Female Pattern Hair Loss? A Simple Explanation

7. Will Hair Grow Back After Stress-Related Hair Loss?

In most cases, yes.

Once the underlying trigger has resolved and the body returns to normal physiological balance, the hair growth cycle usually recovers.

For most people:

• Shedding begins to improve within a few months

• New hairs gradually emerge

• Density slowly returns

Hair grows at around 1cm per month, so visible improvement takes time.

To understand what this timeline looks like, read How Long Does Hair Regrowth Actually Take? https://www.hairandme.com/blog/how-long-does-hair-regrowth-actually-take

8. Can Telogen Effluvium Become Chronic?

In some patients, hair shedding continues to be intermittent or continuous for long periods of time, sometimes for years. The hair cycle appears to be reset so that the anagen (growth) phase is shortened.

The mechanism of chronic telogen effluvium is not well understood but we do know that long-term stress can contribute to chronic telogen effluvium. 

Managing stress can therefore support both overall wellbeing and a healthier environment for hair growth.

9. When Should You Seek Help?

It may be worth seeking professional advice if:

• Shedding continues for more than six months

• Hair loss is becoming progressively worse

• A widening parting or receding hairline develops

• Hair loss is accompanied by other symptoms such as fatigue or weight changes

• There is uncertainty about the cause

Blood tests may sometimes be recommended to investigate other contributing factors, including iron deficiency or thyroid dysfunction.

Related reading:

• Can Low Iron Cause Hair Loss? A Simple Explanation

• Thyroid Problems & Hair Loss: Is There a Connection?

How Hair + Me Can Help

Every Hair + Me treatment begins with a thorough online consultation that's reviewed by our team of UK-licensed Pharmacist Prescribers. They'll assess your hair loss pattern, medical history, lifestyle and treatment goals to determine whether treatment is appropriate and, if so, create a personalised treatment plan tailored to your individual needs.

Using clinically-proven, prescription-strength ingredients, your treatment is designed to address the underlying cause of your hair loss, helping to reduce shedding, support regrowth and improve hair density over time. As your hair changes, your treatment can too. Regular reconsultations allow your prescriber to review your progress, and where appropriate, reformulate your prescription to help you achieve the best possible results.

Final Thoughts

Stress can absolutely cause hair shedding—but it usually causes telogen effluvium, not permanent pattern hair loss.

The encouraging news is that stress-related hair loss is often temporary, and most people experience regrowth once the underlying trigger has been addressed.

If hair loss continues, follows a recognisable pattern, or causes ongoing concern, it is worth seeking professional assessment to identify whether another form of hair loss may also be present.

Continue Reading

• What Are the Most Common Types of Hair Loss? A Simple Explanation

• What Is Female Pattern Hair Loss? A Simple Explanation

• How Long Does Hair Regrowth Actually Take?

• Can Low Iron Cause Hair Loss? A Simple Explanation

Scientific References

1. Malkud S. Telogen Effluvium: A Review. Journal of Clinical and Diagnostic Research. 2015.

2. Headington JT. Telogen Effluvium: New Concepts and Review. Archives of Dermatology. 1993.

3. Harrison S, Sinclair R. Telogen Effluvium. Clinics in Dermatology. 2002.

4. Inamadar AC. Covid Induced Telogen Effluvium (CITE): An Insight. Indian Dermatol Online J. 2022 Jun 24;13(4):445-448.

Helpful Resources

• British Association of Dermatologists – Telogen Effluvium

• NHS – Hair Loss

• American Academy of Dermatology – Hair Loss Resource Centre