<unk>  has an incidence of 1 in 50,000 to 150,000 with higher incidence in Australia. One aspect of<unk>  is that<unk> -cell<unk> s will occur on areas of the body which are not generally exposed to sunlight, such as the palms and soles of the feet and lesions may develop at the base of palmar and plantar pits. One of the prime features of<unk>  is development of multiple<unk>  at an early age, often in the teen years. Each person who has this<unk>  is affected to a different degree, some having many more characteristics of the condition than others.
Nevoid basal-cell carcinoma syndrome
Neurofibromatosis
Familial multiple lipomatosis
Hereditary multiple exostoses
Genodermatosis
Frontonasal dysplasia
Neurofibromatosis type I
Multiple hamartoma syndrome