Definition:

Localized scleroderma, also known as morphea, is a rare fibrosing disorder of the skin and underlying tissues. Sclerosis is mainly limited to the skin, but subcutaneous tissue, fascia, and underlying muscles and bone may also be involved. It is generally differentiated from systemic scleroderma by the lack of Raynaud's phenomenon and visceral involvements. Localized scleroderma is classified into plaque morphea, generalized morphea, and linear scleroderma subtypes according to the clinical presentation and depth of tissue involvement. Localized scleroderma generally appears at any age, and onset at 20-50 years old is common, with the exception of the linear type, which often develops in childhood. Extracutaneous manifestations in morphea are not rare. The most common extracutaneous manifestations are arthralgia and myalgia. Neurologic manifestations and ocular complications are the most common in those children with head and neck involvement.