A. Chronic Dermatoses

1. Seborrheic dermatitis
2. Contact dermatitis
3. Psoriasis
4. Ichthyoses
5. Nummular eczema

B. Congenital Disorders

1. Netherton's syndrome
2. Familial keratosis pilaris
3. Infections and infestations
4. Scabies
5. Dermatophytosis
6. HIV associated dermatitis

C. Malignant Disease

1. Cutaneous T cell lymphoma (mycosis fungoides, Sezary Syndrome)
2. Letterer-Siwe Disease

D. Immunologic Disorders

1. Dermatitis herpetiformis
2. Pemphigus foliaceus
3. Dermatomyositis
4. Graft versus host disease (GVHD)

E. Immunodeficiencies

1. Wiskott-Aldrich Syndrome
2. Severe combined immunodeficiency (SCID)
3. Hyper-IgE (Job's) Syndrome
4. DiGeorge Syndrome

F. Metabolic Disorders

1. Zinc deficiency
2. Pyridoxine (Vitamin B6) and niacin
3. Multiple carboxylase deficiency
4. Phenylketonuria

References

1. Leung DYM and Bieber T. 2003. Lancet. 361(9352):151