<unk>  is caused by a mutation of the keratin 4 or keratin 13 genes, located respectively at human chromosomes 12q13 and 17q21-q22. The condition is inherited in an autosomal dominant manner. This indicates that the defective gene responsible for a disorder is located on an autosome (chromosomes 12 and 17 are autosomes), and only one copy of the defective gene is sufficient to cause the disorder, when inherited from a parent who has the disorder.
White sponge nevus
Eccrine nevus
Melanocytic nevus
Halo nevus
Dysplastic nevus
Connective tissue nevus
Hydrocarbon keratosis
Arsenical keratosis