A helmet dent in the pillow is not Norwood. Loosen fit; photograph the part; do not blame only the foam.
Traction alopecia is a recognised pattern from tension. Helmets and goggles can contribute at edges. Androgenetic miniaturisation is still an exam. This page will not invent a PMID. Related: traction-from-ponytails and hat-after-minoxidil — different URLs.
Do not start oral finasteride from a Strava screenshot. Do not double minoxidil on a raw strap line.
Pus along a strap, or a child with a too-tight helmet rash, is care. This is not medical advice.
Try the free self-check →Sources: AAD ↗
FAQ
Is it pattern baldness?
Traction edges versus miniaturisation need an exam.
Looser helmet enough?
Fit is safety plus tension. This page is not a bike-fit PMID.
More minoxidil after rides?
No. Follow the carton.
Same as wearing-hats page?
Related mechanical file, different URL. This essay is cycling helmets.
Explore more
⚠️ 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