Paisley tie (tadpole) ddx
Desmoplastic trichoep
Microcystic adnexal carcinoma
Morpheaform BCC
Syringoma
Blue balls in the dermis
Cylindroma Spiradenoma Dermal duct tumor Glomus tumor Hidradenoma Trichoblastoma
Lichenoid interface dermatitis ddx
Lichen planus Lichen planus-like keratosis Lichenoid drug eruption Lichenoid GVHD Melanoma with lichenoid regression Lichen nitidus Lichen striatus Lichenoid pigmented purpura Lichenoid secondary syphilis Hypertrophic lupus erythematosus
Neutrophils in the stratum corneum (PTICSS)
Psoriasis Tinea Impetigo Candida Seborrheic dermatitis Syphilis
Subcorneal pustules (CAT PISS)
Candida
Acropustulosis of infancy
Transient neonatal pustular melanosis
Pustular psoriasis
Impetigo
Sneddon-Wilkinson (and IgA pemphigus)
Staph scalded skin
Eosinophilic spongiosis (HAAPPIED)
Herpes gestationis Arthropod Allergic contact Pemphigus Pemphigoid Incontinentia pigmenti Erythema toxicum neonatorum Drug reaction