* Nodules are discrete, generally symmetric, hyperpigmented or purpuric, and firm. They are greater than 0.5 cm in both width and depth (as opposed to papules which are less than 0.5 cm). They can appear on any part of the body, but generally begin on the arms and legs. * Excoriated lesions are often flat, umbilicated, or have a crusted top. * Nodules may appear to begin in the hair follicles. * Nodule pattern may be follicular. * In true<unk> , a nodule forms before itching begins. Typically, these nodules are extremely pruritic and are alleviated only by steroids.
Prurigo nodularis
Prurigo simplex
Prurigo pigmentosa
Hypertrichosis cubiti
Lamellar ichthyosis
Ichthyosis acquisita
Phakomatosis pigmentokeratotica
Keratosis