Alopecia Areata in Women Over 40: Causes, Diagnosis, and Treatment Options

Understanding Alopecia Areata

Alopecia areata is an autoimmune condition in which the immune system mistakenly attacks hair follicles, causing patchy hair loss. It affects approximately 2% of the population and can occur at any age, though it often first appears or worsens during periods of immune dysregulation — including the hormonal shifts of perimenopause.

Unlike androgenetic alopecia, which causes gradual thinning, alopecia areata typically presents as one or more distinct, smooth, round patches of hair loss. The patches can appear anywhere on the scalp and may expand, merge, or spontaneously resolve. In some cases, the condition progresses to alopecia totalis (complete scalp hair loss) or alopecia universalis (complete body hair loss), though this is less common.

The Autoimmune Connection

Alopecia areata is associated with other autoimmune conditions, including thyroid disease (Hashimoto's thyroiditis and Graves' disease), vitiligo, and type 1 diabetes. Women with a personal or family history of autoimmune conditions are at higher risk. Stress, illness, and hormonal changes can trigger or worsen flares.

Treatment Options

Treatment options for alopecia areata have expanded significantly in recent years. Intralesional corticosteroid injections remain a first-line treatment for limited patchy disease. Topical immunotherapy (DPCP or SADBE) is used for more extensive disease. Most excitingly, JAK inhibitors — a new class of medications — have shown remarkable efficacy in clinical trials, with baricitinib (Olumiant) receiving FDA approval specifically for severe alopecia areata in 2022. Nutritional support, particularly optimizing vitamin D and zinc, may also play a supportive role. Consider our comprehensive hair loss protocols which include immune-supporting supplementation strategies.