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THE TREATMENT REGISTRY
Patient journey

Severe male pattern baldness

By The Treatment Registry editors

Advanced androgenetic alopecia in men, typically Norwood VI-VII, with extensive crown and frontal loss and a limited donor area. Distinct from earlier-stage hair loss in that the treatment goal is realistic distribution of a limited donor resource rather than full coverage. Treatment combines medical management to preserve the donor, hair-transplant surgery, and (in some cases) micropigmentation or hair systems.

Clinical overview

Signs and symptoms

Male-pattern hair loss is a form of non-scarring alopecia that affects the top and front of the scalp. It typically begins with a receding frontal hairline together with loss of hair over the crown and vertex, and in most cases the receding hairline is the first sign. As it progresses, a rim of hair at the sides and rear of the head remains, referred to as a "Hippocratic wreath", and it rarely progresses to complete baldness. This retained rim corresponds to advanced male loss, in which extensive crown and frontal loss leaves only a limited fringe of permanent hair from which any remaining coverage can be redistributed.

Causes and risk factors

Pattern hair loss is caused by a combination of male sex hormones and genetic factors, although the mechanism is not fully understood. Genetic changes make scalp hair follicles sensitive to androgens, with dihydrotestosterone (DHT) the major contributor at the dermal papillae; 5-alpha-reductase converts free testosterone to DHT and is highest in the scalp and prostate gland. Men with androgenetic alopecia typically have higher 5-alpha-reductase activity and higher free androgens, including DHT. Inheritance is strong, with around 80% of bald men having bald fathers, and insulin-like growth factor, oxidative stress and the scalp microbiome have also been implicated. Early-onset disease (before age 35) is associated with metabolic syndrome and insulin resistance, at roughly a four-fold increased frequency in younger men.

How it is diagnosed

In men, the diagnosis of androgenetic alopecia can usually be established from the clinical presentation and the typical progressive pattern of hair loss. Trichoscopy can be used for further evaluation, and a biopsy may be needed to exclude other causes of hair loss, with histology demonstrating perifollicular fibrosis. Severity in males is graded using the Hamilton-Norwood scale, on which advanced male pattern baldness corresponds to the higher grades of extensive crown and frontal loss.

Who it affects

By the age of 50, pattern hair loss affects about half of males, and it is the most common cause of hair loss. Reported figures indicate that 30-50% of men have male androgenetic alopecia by age 50, with an estimated hereditary predisposition of around 80%. The association between androgenetic alopecia and metabolic syndrome is strongest in non-obese men.

Clinical overview sourced from encyclopaedic medical reference; see sources below. General information only — not a substitute for individual clinical assessment.

Treatment ladder

Conservative options are first-line where appropriate; surgical options are typically reserved for cases where lower-tier options are unsuitable or have failed. Decisions are individual and depend on clinical assessment.

Conservative

  • Topical minoxidil

    FDA-approved topical treatment with modest effect on density and good tolerability in most patients. Effect is lost on discontinuation.

  • Oral finasteride

    Prescription-only 5-alpha-reductase inhibitor. Effective at slowing progression but carries a small risk of sexual side effects that may persist; assess against the patient's priorities.

Procedural

  • Scalp micropigmentation

    A cosmetic tattoo that mimics shaved hair. Permanent (within touch-up cycles), avoids the limits of donor area, and is often paired with shaved-head presentation in severe cases.

  • PRP for hair loss · View procedure page

    Platelet-rich plasma injections into the scalp. Evidence base for severe cases is limited; effect is gradual and requires repeat sessions.

Surgical

  • Hair transplant (FUE) · View procedure page

    Follicular unit extraction from the donor area to the recipient site. Donor preservation is critical in severe cases; over-harvesting produces a visible donor depletion that cannot be reversed.

  • Sapphire FUE · View procedure page

    FUE using sapphire-blade recipient channels. Marketed claim of improved healing; evidence base is mixed. Subject to the same donor-preservation constraints as standard FUE.

Related procedures

Sources

  1. [1]WHO Surgical Safety Checklist — who.int(accessed 2026-05-09)
  2. [2]Wikipedia — Pattern hair loss — en.wikipedia.org(accessed 2026-07-24)

Sources marked “on file” are held by The Treatment Registry but are not publicly accessible.