Table 6
Epidermal histological alteration in psoriasiform dermatitis
| Alterations in stratum spinosum layer | Clinical conditions |
|---|---|
| Increased mitotic figures | Psoriasis |
| Spongiosis and exocytosis of lymphocytes | Chronic spongiotic dermatitis Fungal infection |
| Drug reaction | |
| Seborrheic dermatitis | |
| Spongiosis and exocytosis of eosinophils | Atopic dermatitis Allergic contact dermatitis |
| Nummular dermatitis | |
| Drug reaction | |
| Arthropod bite | |
| Scabies | |
| Prebullous bullous pemphigoid | |
| Spongiosis and exocytosis of neutrophils | Psoriasis Fungal infection |
| Secondary syphilis (uncommon) | |
| Atypical mononuclear cells | Mycosis fungoides |
| Langerhans cell histocytosis | |
| Cutaneous CD30 lymphoproliferative disorders | |
| Single keratinocytes apoptosis | Drug reaction |
| Psoriasiform subacute lupus erythematosus | |
| Pale keratinocytes | Nutritional dermopathies |
