How much hair loss is normal?

Losing roughly 50 to 100 hairs a day is normal. Visible thinning, patches, or a widening part warrants evaluation.

Can stress cause hair loss?

Yes. Significant stress, illness, or surgery can trigger telogen effluvium, a diffuse shedding that usually begins two to three months later and is typically temporary.

Hair Loss: which doctor should you see?

Last updated: August 12, 2026 · Reviewed by the PickTheDoc.com team · Editorial policy

Short answer: most cases of hair loss are handled by a Dermatologist. Read on for the exceptions.

What this symptom means

Shedding around 50 to 100 hairs a day is normal. Hair loss becomes worth investigating when you notice thinning patches, a widening part, a receding hairline, or clumps coming out. Timing matters: sudden diffuse shedding often follows a stressful event by two to three months.

Common causes

Male and female pattern hair loss
Telogen effluvium following illness, surgery, or stress
Thyroid disorders
Iron deficiency
Alopecia areata
Scalp infections and traction from tight hairstyles

Which doctor treats hair loss?

Hair loss is treated by a dermatologist, who can distinguish scarring from non-scarring types, a distinction that determines whether regrowth is possible. A primary care physician can order blood tests for thyroid problems and iron deficiency, which are common and treatable contributors.

When it may be urgent

Call 911 or go to the nearest emergency room if you experience any of the following.

Sudden patchy hair loss with scalp pain or scarring
Hair loss with a rash, sores, or open wounds on the scalp
Hair loss with significant unexplained weight change or fatigue

Frequently asked questions

Which doctor treats hair loss?: A dermatologist specializes in hair and scalp conditions and can diagnose the type of hair loss and discuss treatment.
How much hair loss is normal?: Losing roughly 50 to 100 hairs a day is normal. Visible thinning, patches, or a widening part warrants evaluation.
Can stress cause hair loss?: Yes. Significant stress, illness, or surgery can trigger telogen effluvium, a diffuse shedding that usually begins two to three months later and is typically temporary.

Related symptom guides

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Sources

MedlinePlus, U.S. National Library of Medicine (medlineplus.gov)
Centers for Disease Control and Prevention (cdc.gov)
Relevant national medical specialty association guidance

This is not medical advice. This guide explains which type of doctor commonly treats this symptom. It does not diagnose conditions. In an emergency, call 911. Read our full medical disclaimer.

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