Identified by the presence of comedones (blackheads and whiteheads), which are absent in the papular lesions of sarcoidosis.
Presents as atrophic, scaly plaques with follicular plugging and often results in scarring, unlike the non-scarring papules of sarcoidosis.
Characterized by annular arrangements of skin-colored or erythematous papules, often on the distal extremities, and lacks the systemic involvement of sarcoidosis.
Recognized by its pruritic, purple, polygonal, planar papules and plaques, often with Wickham's striae (fine white lines on the surface).
A form of cutaneous tuberculosis that classically shows 'apple-jelly' nodules (yellowish-brown color) upon diascopy.
Presents as clusters of small papules and pustules around the mouth, nose, and eyes, sparing the vermilion border, a distinct pattern from sarcoidosis.
An itchy rash that appears hours to days after sun exposure and resolves, unlike the persistent nature of sarcoidosis lesions.
Distinguished by background erythema, telangiectasias, and a lack of comedones, primarily on the central face.
Presents as photosensitive, annular, or papulosquamous plaques and is strongly associated with anti-Ro/SSA antibodies.
An asymmetric fungal infection with an active, scaling border that is confirmed by a positive KOH preparation.
