Skin & Hair
Hair Loss and Scalp Conditions: When to See a Specialist
Hair loss has a wide range of possible causes, from common and largely genetic patterns to conditions that indicate an underlying medical issue. Because the right treatment depends entirely on which type is present, an accurate diagnosis is the first and most important step.
The most common types of hair loss
Androgenetic alopecia (pattern hair loss) is the most common type in both men and women, typically progressing gradually over years. Telogen effluvium describes a temporary, more diffuse shedding often triggered by stress, illness, or hormonal changes, usually resolving once the trigger resolves. Alopecia areata is an autoimmune condition causing patchy hair loss and requires a different management approach entirely.
How a dermatologist reaches a diagnosis
Diagnosis typically starts with a detailed history covering onset, pattern, family history, and any recent illness, medication changes, or major life stressors. Trichoscopy — a magnified examination of the scalp and hair, similar in principle to dermoscopy for skin — helps distinguish between hair loss types based on visible patterns at the follicle level that aren't apparent to the naked eye.
When blood tests are relevant
Certain types of hair loss are linked to underlying factors such as thyroid dysfunction, iron deficiency, or other nutritional deficiencies, and blood tests may be recommended to check for these when the clinical picture suggests they could be contributing, rather than as a routine step for every case.
Treatment approaches vary by cause
Pattern hair loss is generally managed with topical or oral treatments aimed at slowing progression, and results take months to become apparent given hair growth cycles. Alopecia areata may be managed differently, sometimes with corticosteroid treatments directly targeting the immune response. This is exactly why treating hair loss without an accurate diagnosis first often wastes months on the wrong approach.
When to seek input sooner rather than later
Sudden or patchy hair loss, hair loss accompanied by scalp pain, redness, or scarring, or hair loss alongside other unexplained symptoms are reasons to seek a specialist opinion promptly rather than waiting to see if it resolves on its own.
vetting Harley Street dermatology clinics covers how this fits into choosing the right specialist for an ongoing concern.