| A patient is diagnosed as PR if· On at least one occasion or clinical encounter the person has all the essential clinical features and at least one of the optional clinical features, and· On all occasions or clinical encounters related to rash, the person does not have any of the exclusional clinical features |
| Essential clinical features | Optional clinical features (at least one to be present) | Exclusional clinical features |
| · Discrete circular or oval lesions· Scaling on most lesions· Peripheral collarette scaling with central clearance on at least two occasions | · Truncal and proximal limb distribution, with<10% of lesions distal to mid upper arm or mid-thigh· Orientation of most lesions along the direction of ribs· A herald patch(not necessarily largest) appearing at least 2 days before the generalized eruption | · Multiple small vesicles at the center of two or more lesions· Most lesions on palmar or plantar skin surfaces· Clinical or serological evidence of secondary syphilis |