🌐 Free · Evidence-based · Always available

Dermatology Tools
for Clinicians

Calculators, severity scales, diagnostic guides and classifications — built for dermatologists worldwide, free for everyone.

Browse by disease using the A–Z menu on the left (or tap the ☰ button on mobile). Select a disease to see its available tools — calculators, severity scales and clinical guides — each clearly labelled by type.

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PASI Score

Psoriasis Area and Severity Index with step-by-step body region input.

Scale · Psoriasis
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SCORAD

Severity scoring of atopic dermatitis — extent, intensity and symptoms.

Scale · Atopic Dermatitis
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Acne Classification & Treatment

Grading system and evidence-based treatment algorithm by severity.

Guide · Acne