Differential Diagnosis > Other > High Yield Differential Diagnoses > EAC automatic ddx

EAC automatic ddx

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This group of disease should be thought of together automatically (if you think of one, then all of them should at least cross your mind. The diseases are all annular (in at least one of their forms) and scaly.

 

The list:   EAC, PR, secondary syphilis, parapsoriasis, MF, extended list: erythema gyratum repens

 

Mnemonic:

•(EAC makes you think of PR) (identical histology Erythema Gyratum Repens also shares identical histology)
•PR --> RPR (secondary syphilis)  (should be automatic)
•PR that lasts too long --> parapsoriasis --> MF