Male pattern hair loss
Androgenetic alopecia (AGA)
What it looks like
- Hairline recedes at the temples into an M shape.
- Thinning spot on the crown that slowly widens.
- Hairs get finer and shorter before they disappear (miniaturisation).
- Measured on the Norwood scale, stages 1 to 7.
Clues that point here
Slow, over years. Scalp looks normal: no redness, no scale, no itch. Often runs in the family. The back and sides usually stay full.
How it gets confirmed
Usually diagnosed by eye. Trichoscopy (a magnified scalp camera) shows hairs of very different thicknesses side by side.
Treatments
- Minoxidil 5% foam or liquidStrong
- Finasteride 1 mg tabletStrong
- Low-dose oral minoxidilModerate
- Dutasteride (off-label in the UK)Moderate
- Topical finasteride sprayModerate
- PRP injectionsEmerging
- Hair transplant, once loss is stableStrong