Male Pattern Hair Loss: Diagnosis and Treatment

Male pattern hair loss gradually miniaturises susceptible scalp follicles, producing a receding hairline or crown thinning.

It is also called androgenetic alopecia. Follicles remain present but produce progressively finer, shorter hairs. The condition affects scalp appearance rather than physical health, although the change can have a substantial emotional impact.

Very common presentations include gradual hair thinning, a receding hairline and visible scalp at the crown. The sides and back are often relatively preserved. Increased shedding may draw attention to the change, but the patterned distribution and variation in hair shaft thickness are more informative than counting shed hairs.

Inherited follicle sensitivity to androgen signalling drives the process. Susceptible follicles spend less time producing a full-sized hair and gradually make finer strands. This does not mean a person's overall testosterone level is unusually high. Genes can come from either side of the family, and relatives may show different patterns.

Change is generally gradual, with periods that appear stable and periods when thinning is more noticeable. Once follicles have become very small, restoring visible density is harder than preserving actively growing hair. Sudden clumps of loss, smooth isolated patches, scalp pain or heavy scale suggest that another process may be present.

Family history and increasing age make the characteristic pattern more likely to emerge. Styling, shampoo frequency and wearing a hat do not cause androgenetic follicle miniaturisation. Tight hairstyles can create a separate traction-related loss, while illness or major physiological stress can add temporary shedding on top of an existing pattern.

A clinician reviews the distribution, onset, family history, medicines and scalp symptoms. Magnified examination can show mixed hair shaft diameters caused by miniaturisation. Tests are not routinely needed for a classic pattern, but blood work or a scalp sample may be appropriate when shedding is abrupt, inflammation is present or the appearance is atypical.

Topical minoxidil supports follicle activity and must be continued to maintain its effect. Oral minoxidil may be prescribed selectively after review of blood pressure, cardiovascular history and other medicines. Finasteride reduces androgen signalling at susceptible follicles; a prescriber should explain sexual, reproductive and mood-related considerations before treatment.

Low-level laser devices and PRP may be discussed as additional approaches, with suitability and response varying. Hair transplantation redistributes follicles from a more resistant donor area, while scalp micropigmentation creates the visual impression of closely cut hair or greater density. Procedures need planning around future loss, donor supply and realistic coverage.

Photographs taken with the same hairstyle, lighting and angle give a clearer record than frequent mirror checks. Gentle styling reduces breakage but cannot change genetic sensitivity. A shorter cut, hair fibres, scalp concealers or no camouflage are all reasonable personal choices. Mention distress or persistent low mood during a consultation.

Androgenetic alopecia does not itself cause scalp wounds or systemic illness. Reduced coverage can leave the scalp more exposed to sunlight, so a hat or sunscreen is useful. Treatment side effects depend on the option chosen; report faintness, swelling, palpitations, troublesome skin irritation or new sexual or mood symptoms promptly.

Genetic susceptibility cannot be prevented. Starting an appropriate treatment while miniaturised follicles still produce hair may preserve more coverage than waiting for an area to become bare. Avoid supplements unless a deficiency or dietary need is identified, because excess nutrients do not reverse androgen-driven miniaturisation and some can cause harm.

A dermatologist can confirm the pattern and discuss medical monitoring. For transplantation, choose a clinician who assesses the donor area, likely future thinning and the long-term design rather than focusing only on the current bare area. Seek prompt review for painful, inflamed, scarred or rapidly shedding scalp changes.