Alopecia areata

Alopecia areata typically causes well-defined patches of hair loss on the scalp or other hairy areas of the body. The material below is for general information; a healthcare professional should assess any new or changing hair loss.

What is alopecia areata?

Alopecia areata is a condition often linked to immune-related effects around hair follicles, leading to patchy hair loss. It is not life‑threatening but can affect appearance and quality of life. The course varies widely: some people experience spontaneous regrowth while others have recurring or fluctuating hair loss.

Possible causes and risk factors

The exact cause is not fully understood. Genetic predisposition and immune mechanisms are implicated. Certain triggers such as infections or physical or emotional stress are sometimes reported. There is an increased likelihood of coexistence with other autoimmune conditions (for example thyroid disorders or vitiligo), so broader medical evaluation may be appropriate when indicated.

Typical signs and course

Alopecia areata often starts as round or oval, well‑circumscribed bald patches. It can affect the scalp, beard, eyebrows, eyelashes and body hair. Nail changes may occur in some people. The long‑term outlook is unpredictable: full regrowth, partial improvement, or repeated flares are all possible. Psychological and social support can be helpful.

Diagnosis and which specialist to see

Diagnosis is usually made by clinical examination; dermoscopy can help and a scalp biopsy may be considered if the picture is unclear. Start with your primary care provider for assessment; referral to Dermatology is appropriate when the diagnosis is uncertain, the condition is extensive, or specialist management is needed. If you have additional systemic symptoms or signs suggestive of another autoimmune disease, further specialist input may be arranged. Seek urgent care if you develop severe pain, fever, spreading redness, pus or other signs of infection.

Follow‑up, support and cosmetic options

Management plans vary depending on extent and personal priorities. Dermatologists can discuss medical options, camouflage or prosthetic hair solutions (wigs, hairpieces), and practical hair care advice. Psychological support or peer groups can help with emotional impact. Cosmetic measures often improve day‑to‑day confidence while clinical decisions are made with a specialist.

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