This condition frequently appears under conditions of heat, humidity, and friction, often appearing suddenly. Many patients present after decades of symptoms. Few patients are asymptomatic. Most relate pruritus that disturbs sleep. Changing antiperspirants has not been reported to help.
Some patients report diminution of sweating after onset of symptoms.
Lesions most often are found in the axillae, where they tend to be bilateral. Lesions also may affect the periareolar, inframammary, and pubic areas. Affected areas usually have many papules. The papules usually appear to affect every follicle in a given area. Excoriations and lichenification may be seen as a consequence of scratching.