Hair loss in your teens is less common and deserves a proper look rather than self-treatment. Early pattern (androgenetic) loss can start in the late teens, but teenagers also shed for reversible reasons — stress, crash diets and low iron, thyroid issues, or alopecia areata (sudden round patches). Because some causes are time-sensitive and dosing differs for minors, a teenager with noticeable thinning should see a dermatologist rather than start adult treatments alone. Minoxidil may be used under guidance; finasteride is generally not for adolescents.
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Not medical advice. General education only; it does not replace diagnosis or treatment by a licensed professional. Consult a board-certified dermatologist before starting, stopping or changing any treatment.
⚠️ When to see a doctor — don’t self-treat
- Sudden patchy or circular bald spots
- Redness, scaling, pus, pain or itch (possible scarring alopecia — treat urgently)
- Broken hairs or rapid loss
- Loss with body-wide signs (weight loss, fatigue, cycle changes, acne, extra hair)
- Loss right after a new medication
- Any hair loss in a child