Hereditary disease, trasmitted with recessive autosomical modality, the XP is characterized from extreme photosensivity, that causes strict and... » More

Hereditary disease, trasmitted with recessive autosomical modality, the XP is characterized from extreme photosensivity, that causes strict and premature damages to level of the cutis and of the eyes. Its incidence is of 1: 250 thousand in Europe and USA, while in Japan the relationship is of 1:40 thousand. In the child affected by XP, also short exposure to the sun's ultraviolet rays, determines severe cutaneous sunburn with slow resolution, therefore it is from avoiding sources of ultraviolet cancellations categorically, considering moreover that the effects of the exposures are cumulative in the time. The cutaneous displays that characterize the disease, which pigmented specks, dry skin, atrophic lesion, keratoses, bubbles, carry to the apparence, also before the ten years of age, skin cancers.

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