<unk>  is a skin disorder that is present at birth. Affected babies may have very red skin (erythroderma) and severe blisters. Because newborns with this disorder are missing the protection provided by normal skin, they are at risk of becoming dehydrated and developing infections in the skin or throughout the body (sepsis). As affected individuals get older, blistering is less frequent, erythroderma becomes less evident, and the skin becomes thick (hyperkeratotic), especially over joints, on areas of skin that come into contact with each other, or on the scalp or neck. This thickened skin is usually darker than normal. Bacteria can grow in the thick skin, often causing a distinct odor.<unk>  can be categorized into two types :- * People with PS-type<unk>  have thick skin on the palms of their hands and soles of their feet (palmoplantar or palm/sole<unk>  in addition to other areas of the body. * People with the other type, NPS-type, do not have extensive palmoplantar<unk> , but do have<unk>  on other areas of the body.<unk>  is part of a group of conditions called ichthyoses, which refers to the scaly skin seen in individuals with related disorders. However, in<unk> , the skin is thick but not scaly as in some of the other conditions in the group. http://ghr.nlm.nih.gov/condition/epidermolytic-hyperkeratosis
Epidermolytic hyperkeratosis
Electrotrichogenesis
Hyperkeratosis
Porokeratosis
Sebaceous hyperplasia
Granulomatous slack skin
Hyperkeratinization
Clear cell acanthoma