Celiac disease is an autoimmune disease in people with a genetic predisposition resulting from the consumption of gluten proteins from wheat, rye, barley and characterized by inflammation of the mucous membrane of the small intestine and atrophy of the villi. Neuropathy, migraine, chronic cerebellar ataxia and fibromyalgia are the most common extraintestinal celiac disease syndromes. The study of small nerve fibers is necessary for painful celiac disease syndromes such as gluten neuropathy and fibromyalgia, as well as for gluten autonomic neuropathy. The study of antineuronal antiganglioside antibodies is necessary for such lesions of both the central and peripheral nervous systems as gluten neuropathy and gluten cerebellar ataxia. A gluten-free diet directly affects the disappearance of headache attacks or a decrease in their frequency and intensity. There is little research on the effect of a gluten-free diet on headache risk.