The presentation and degree of the disease vary, both in anatomical location and severity. Generally, the earlier the age of onset, the more severe and widespread the disease.
Not every patient gets the disease in every anatomical location. In some patients, the disease is isolated to the axillary area, while in others, multiple anatomical locations are involved simultaneously. Involvement of more than one anatomical area is usually associated with increased severity of the disease.
Patients with a long-standing history of the disease may suffer from more severe symptoms, due to the disease’s recurrent and chronic nature.