Chronic dermatoses
Seborrheic dermatitis
Contact dermatitis
Nummular eczema
Psoriasis
Ichthyoses
Infections and infestations
Scabies
Human immunodeficiency virus-associated dermatitis
Dermatophytosis
Immunodeficiencies
Wiskott-Aldrich syndrome
Severe combined immunodeficiency syndrome
Hyper-IgE syndrome
Autoimmune disorders
Dermatitis herpetiformis
Pemphigus foliaceus
Graft-versus-host disease
Dermatomyositis
Metabolic disorders
Zinc deficiency
Pyridoxine ( vitamin B6) and niacin
Multiple carboxylase deficiency
Phenylketonuria
Congenital disorders
Netherton’s syndrome
Familial keratosis pilaris
Malignancies
Cutaneous T cell lymphoma ( mycosis fungoides/Sérazy syndrome)
Letterer-Siwe disease
Table 1: Differential Diagnosis of Atopic Dermatitis.