Dermdle.

Today’s diagnostic challenge

What’s your diagnosis?

Source-referenced educational case

Close-up of sun-exposed skin with numerous small pink-brown annular macules and thin plaques. Several lesions have a sharply raised thread-like peripheral scale and a paler, mildly atrophic center.
Watermarked image sourced from DermNetCC BY-NC-ND 4.0 educational use

A daily practice ritual

Visual diagnosis first.
Context when you need it.

Dermdle pairs the challenge of a dermatology Kodachrome session with a two-to-five-minute daily format. Every incorrect attempt unlocks a more specific clue.

See how scoring works
Five stagesFrom photograph-only recognition to a highly specific clue.
One shared caseThe same server-selected challenge for everyone each day.
Learn afterReviewed explanations appear only when the round ends.
Review gatedRights, references, and medical review before publication.