<unk>  is the most common form of cutaneous mastocytosis.  It is a rare disease caused by excessive amounts of mast cells in the skin that produce hives or lesions on the skin when irritated.
Urticaria pigmentosa
Phytophotodermatitis
Ichthyosis bullosa of Siemens
Balanitis xerotica obliterans
Ichthyosis vulgaris
Ichthyosis lamellaris
Alopecia mucinosa
Aquagenic keratoderma