The Hair-Loss Decision Tree: What to Do Before Buying Any Treatment
Diffuse shedding, pattern thinning, patchy loss and inflammatory hair loss are different problems. This guide turns the first steps into a decision tree.
Flagship Guide · 13 min read · August 22, 2026
Question one: shedding or thinning?
A sudden increase in shed hairs is different from gradual density loss in a recognizable pattern. Telogen effluvium can follow illness, childbirth or major physical stress, while androgenetic alopecia is usually progressive.
Question two: are there distinct patches?
Round or sharply defined areas of hair loss raise a different differential diagnosis, including alopecia areata and selected inflammatory or fungal causes. This is not the time to trial random supplements for three months.
Question three: does the scalp look and feel normal?
- Pain, burning or significant tenderness.
- Heavy scale or persistent inflammation.
- Redness or pustules around follicles.
- Loss of follicular openings or smooth scar-like areas.
Inflammatory or scarring signs change the priority: diagnosis comes before growth serums.
Where does minoxidil fit?
Minoxidil is an important treatment for pattern hair loss and selected other settings, but it does not replace diagnosis. If the cause is different, perfect application still will not solve the underlying problem.
Medical references
Medical review
This guide was written and medically reviewed by Dr. Yousef Abo Zarad, a German board-certified specialist in Dermatology and Venereology.