Telogen Effluvium: How Long Does Stress or Postpartum Hair Shedding Last?
Heavy shedding usually starts 2 to 4 months after a trigger such as childbirth, illness, rapid weight loss or stopping the pill, and hair tends to regain its fullness within 6 to 9 months. Shedding that lasts beyond 6 months is classed as chronic, and a dermatologist can tell whether another type of hair loss is also involved.
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This guide
Women's Hair Loss- Question
- How long does telogen effluvium last, and when does hair grow back?
- Sources
- 5 cited
- Quick answers
- 3 questions
- Clinician review
- None; sources cited inline
Key takeaways
4 points- Shedding 50 to 100 hairs a day is normal; telogen effluvium is shedding well above that after a stressor, and it often stops on its own1.
- Shedding typically appears 3 to 4 months after the trigger23; after childbirth, the AAD says it starts around 2 months and peaks around 41.
- Hair tends to regain its normal fullness within 6 to 9 months, according to the AAD1; shedding that lasts longer than 6 months is classed as chronic3.
- No treatment is approved for telogen effluvium, so finding and removing the trigger comes first3.
Shedding vs hair loss
The American Academy of Dermatology (AAD) says it is normal to shed 50 to 100 hairs a day; shedding significantly more is excessive shedding, medically called telogen effluvium. It differs from hair loss caused by something that stops hair from growing, such as hereditary thinning1.
Telogen effluvium is the most common cause of diffuse hair loss2. Because only shed hairs are lost, visible thinning appears only when about 40% of hairs have been shed, according to the classic description3.
The timeline
Diffuse shedding is seen 3 to 4 months after the triggering event23. After childbirth, the AAD says shedding starts about 2 months after delivery, peaks around 4 months, and is normal and temporary1.
In a Japanese survey of 331 women 10 to 18 months after delivery, 91.8% reported postpartum hair loss. On average it started at 2.9 months, peaked at 5.1 months and ended at 8.1 months; longer breastfeeding and preterm labor were linked to it4. Only 21% of mothers returned the questionnaire, and those with hair loss may have been more likely to respond4.
As the body readjusts, the AAD says shedding stops and hair tends to regain its normal fullness within 6 to 9 months; if the stressor continues, shedding can continue too1.
After COVID or a hospital stay
In a prospective study of 77 people hospitalized with severe COVID-19, 68.8% reported telogen effluvium. Among those who shed, about 21% reported complete regrowth within 3 months and another 60% within 6 months, while 7.5% had chronic shedding5.
Female sex, anemia, low blood protein and severe pneumonia were linked to shedding in that study5. Rapid weight loss is a trigger too; our GLP-1 hair loss guide covers shedding on weight-loss drugs.
When shedding does not stop
Telogen effluvium is called chronic when it lasts longer than 6 months, and it is often found alongside androgenetic alopecia, known in women as female pattern hair loss3. The AAD says some people have both shedding and hair loss, and a dermatologist can tell them apart1. Our guides to minoxidil for women and spironolactone cover pattern hair loss treatment.
On supplements, a 2019 review found the evidence on iron and ferritin conflicting and said the literature does not support vitamin E or biotin, while too much vitamin A can contribute to hair loss3. See our review of hair loss supplements and our guide to low ferritin without anemia before buying anything.
- Consider seeing a dermatologist if shedding has not eased by about 6 months, the point at which it is classed as chronic3, or sooner if you are worried or notice gradual thinning or round bald patches; the AAD says a dermatologist can tell shedding from hair loss, and some people have both1.
- If you suspect a medicine is the cause, talk with your doctor before stopping it; the AAD warns that stopping some treatments suddenly can cause serious side effects1.
- Expect some extra shedding in the first weeks of minoxidil; it is a known effect of starting the drug3.
Where to buy
Happy Head
Paid links · we earn a commissionAn online hair-loss clinic. A board-certified dermatologist reviews your online consultation and decides whether to prescribe; options include oral spironolactone and custom topicals or capsules (for example spironolactone with minoxidil). Its custom formulas are compounded, so they are not FDA-approved, and spironolactone is not for anyone who is or may become pregnant. Happy Head lists custom formulas at $59 to $119 a month (checked Oct 13, 2026). These treatments target pattern hair loss; shedding from telogen effluvium usually settles once the trigger passes, without them.
Start a Happy Head consultation (paid link, opens in new tab)
Quick answers
Questions
3 answersWill my hair grow back after telogen effluvium?
Usually, yes. The AAD says the excessive shedding stops as the body readjusts and hair tends to regain its fullness within 6 to 9 months1. Shedding beyond 6 months is classed as chronic3, and a dermatologist can tell whether shedding, hair loss or both are involved1.
Can stopping birth control cause hair shedding?
Yes. The AAD lists stopping birth control pills among the common triggers of excessive shedding1. If you are stopping to conceive, see how long it takes to get pregnant after stopping birth control.
Do biotin or iron supplements stop the shedding?
The evidence is weak. A 2019 review said the literature does not support biotin, and found studies of iron and ferritin conflicting3. Testing before supplementing is safer than guessing.
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References
Every study and document cited in this guide, numbered as in the text.
Sources
5 sources- 1Do you have hair loss or hair shedding?. American Academy of Dermatology, 2026.
- 2Telogen Effluvium: A Review. J Clin Diagn Res, 2015. PMID 26500992
- 3Telogen effluvium: a comprehensive review. Clin Cosmet Investig Dermatol, 2019. PMID 31686886
- 4Investigation of exacerbating factors for postpartum hair loss: a questionnaire-based cross-sectional study. Int J Womens Dermatol, 2023. PMID 38323220
- 5COVID-19-associated Telogen Effluvium After Hospital Discharge: A Prospective Cohort Study. Acta Dermatovenerol Croat, 2024. PMID 38946185
Dietary supplements are not intended to diagnose, treat, cure or prevent any disease, and these statements have not been evaluated by the FDA. Prescription options need a licensed clinician. Talk to your clinician or pharmacist before starting anything new, especially if you take prescription medicines, are pregnant or breastfeeding.