Androgenetic Alopecia (Pattern Hair Loss)
Androgenetic alopecia is inherited pattern hair loss involving gradual follicle miniaturisation.
Pattern loss changes the size and growth behaviour of susceptible follicles. The resulting thinning is often gradual, so progress photographs and a scalp examination are more informative than a single close-up or a family anecdote.
Quick answer
Androgenetic alopecia is inherited pattern hair loss involving gradual follicle miniaturisation. It can affect different sexes and is not simply a sign of high testosterone.
What miniaturisation looks like
Successive hairs may become finer and shorter, creating reduced coverage before an area looks bald. Common distributions include a receding hairline and crown thinning, or widening of the central part. Real people do not always fit a textbook pattern, and a normal hormone blood test does not rule out inherited follicle sensitivity.
Family history can come from more than one side of a family. The age and severity of a relative’s loss cannot predict your exact course.
How it is distinguished from other loss
A clinician looks at distribution, scalp changes, hair calibre, and the speed of progression. A sudden increase in shed hairs may reflect another process on top of pattern loss. Pain, heavy scale, or sharply defined patches should not be dismissed as ordinary genetic thinning.
An examination may be enough to establish the likely diagnosis. Tests or a biopsy are reserved for circumstances where they would clarify an alternative explanation.
What management can and cannot do
Treatment may preserve existing hair and produce some thickening, but results vary and maintenance is often needed. Topical minoxidil and prescription options have different eligibility and safety considerations. A transplant redistributes follicles; it does not switch off ongoing loss elsewhere.
- Ask whether the goal is stabilisation, regrowth, camouflage, or a combination.
- Agree on a realistic review interval before starting.
- Discuss pregnancy plans, medicines, and relevant medical conditions before choosing treatment.
Frequently asked questions
Is genetic hair loss unavoidable if a parent has it?
Family history changes likelihood, not certainty or a fixed timeline. Decisions should be based on your own pattern and examination.
Can shampoo reverse miniaturisation?
Ordinary cosmetic shampoo cleans the scalp and hair. It does not replace a treatment directed at follicle miniaturisation.
Sources & further reading
These references support the general explanations above. They do not establish a diagnosis or a personal treatment recommendation. Research findings may not apply to every person or product.
- American Academy of Dermatology: Hair loss causes (opens in a new tab)Medical and public-health guidance
- American Academy of Dermatology: Female pattern hair loss (opens in a new tab)Medical and public-health guidance
- American Academy of Dermatology: Hair loss diagnosis and treatment (opens in a new tab)Medical and public-health guidance
Original HairLens AI educational content. No clinician review is claimed. For individual symptoms or treatment decisions, consult a qualified healthcare professional.