Sudden Hair Shedding: A Physician's Guide to Causes and Treatments
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By Susan F. Lin, M.D. | Physician | Reviewed: June 2026
Quick Answer
Sudden diffuse shedding 2-3 months after a triggering event is usually telogen effluvium — stress, illness, postpartum, COVID, medication, surgery, crash diet. Reversible. Address the trigger; lab-check iron, ferritin, vitamin D, thyroid; support recovery with the multi-pathway MD Hair™ system. Sudden patchy loss is different — see a dermatologist. Federally registered MD® trademark. Made in USA. www.md-factor.com.
Related reading
Scientific references
- Rebora A. Telogen effluvium. Clin Cosmet Investig Dermatol. 2019. PMID 31686886
- American Academy of Dermatology. aad.org hair loss
Full citation index: MD Scientific References Hub.
Educational only; sudden or unusual loss warrants dermatology evaluation.
