Table 1. The most important differential diagnoses of the cutaneous T cell lymphomas.

All kinds of dermatitis and eczema 1, 9, 13– 15 Adverse drug reactions 13 Parapsoriasis 9 Psoriasis 1, 14, 15 Lichen planus 16 Morphea 16 Panniculitis 17 Folliculitis 14 Pityriasis lichenoides chronica 14 Pityriasis lichenoides et varioliformis acuta 14 Pigmented purpuric dermatoses 14 Vitiligo 14 Lymphomatoid papulosis 9