Diagnosis is based on visual examination and the presence of itching. A skin biopsy is often performed to exclude other diseases. Lesion biopsies usually show light inflammation, sometimes with increased numbers of eosinophils. A culture of at least one lesion will rule out staphylococcus infection, which has been significantly linked to atopic dermatitis.
Prurigo nodularis
Prurigo simplex
Prurigo pigmentosa
Hypertrichosis cubiti
Lamellar ichthyosis
Ichthyosis acquisita
Phakomatosis pigmentokeratotica
Keratosis