Non-invasive methods to establish the diagnosis of terra firma-forme dermatosis: The SMART (Skin Modified by Alcohol Rubbing Test) evaluation and dermoscopy.
Terra firma-forme dermatosis may mimic a variety of hyper pigmented dermatoses.  The diagnosis can be characterized using dermoscopy and confirmed with the SMART (Skin Modified by Alcohol Rubbing Test) evaluation.  When terra firma-forme dermatosis (Duncan's dirty dermatosis) is clinically suspected, clearance of the dermatosis follows rubbing the affected skin with 70% isopropyl alcohol.
School of Medicine, University of California, San Diego. tgreywal@gmail.com.
Tanya
T
Greywal
Philip R
PR
Cohen
D019840:2-Propanol / Q000627:therapeutic use; D046169:Dermoscopy; D006801:Humans; D017495:Hyperpigmentation / Q000175:diagnosis*; D012867:Skin
D019840:2-Propanol