Are there any diseases associated with alopecia areata?
Alopecia areata is sometimes associated with other autoimmune diseases (29% of patients) such as autoimmune thyroiditis (4.7%), vitiligo (2.1%) or type 1 diabetes but also to Ulcerative colitis (1%) and celiac disease (1%). Alopecia areata is sometimes associated with atopy (atopic eczema 4.2%, allergic rhinitis 10%), more rarely, psoriasis (2.1%).