Dermatology Calculators
16 calculators
- TBSA — Total Body Surface Area Burned (Rule of Nines)Lund-Browder / Rule of Nines method for estimating total body surface area burned. Guides fluid resuscitation and transfer criteria.
- PASI — Psoriasis Area and Severity IndexStandard severity scoring for plaque psoriasis. PASI ≥10 typically indicates moderate-to-severe disease requiring systemic treatment.
- DLQI — Dermatology Life Quality Index10-item patient-reported outcome measure for quality of life in skin conditions. Combined with PASI to assess biologic eligibility.
- Melanoma ABCDE CriteriaABCDE checklist for clinical evaluation of suspicious pigmented lesions. Positive features prompt urgent dermatology referral.
- EASI — Eczema Area and Severity IndexValidated severity score for atopic dermatitis (eczema) used to assess treatment response and biologic eligibility.
- SCORTEN — Severity Score for TEN/SJSSeverity-of-illness score for toxic epidermal necrolysis (TEN) and Stevens-Johnson syndrome (SJS) to predict mortality.
- Breslow Thickness & Melanoma StagingBreslow thickness is the primary determinant of melanoma T-stage and sentinel lymph node biopsy eligibility. Based on AJCC 8th edition staging.
- Urticaria Activity Score (UAS7)7-day urticaria activity score assessing wheals and pruritus, used to guide antihistamine dosing and omalizumab eligibility in chronic spontaneous urticaria (CSU).
- Vancouver Scar Scale (VSS)4-item clinical scar assessment tool evaluating vascularity, pigmentation, pliability, and height. Total score 0–13; higher score = worse scar. Used to assess burn scars, surgical scars, and response to treatment (silicone gel, pressure garments, laser therapy).
- Melanoma Breslow Thickness and StagingStages cutaneous melanoma based on Breslow thickness, ulceration, and mitotic rate per AJCC 8th edition. Guides surgical margin and sentinel lymph node biopsy decisions.
- PASI Score (Psoriasis Area and Severity Index)Quantifies psoriasis severity by assessing extent and intensity across four body regions. PASI >=10 defines moderate-severe psoriasis eligible for systemic therapy.
- DLQI (Dermatology Life Quality Index)Patient-reported quality of life questionnaire for skin disease. DLQI >10 indicates very large impact; combined with PASI triggers biologic eligibility.
- EASI Score (Eczema Area and Severity Index)Quantifies atopic dermatitis severity across four body regions. EASI >=16 = severe eczema; guides systemic/biologic therapy eligibility (dupilumab).
- Severe Drug Reaction Severity Score (RegiSCAR)Diagnoses Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS) using RegiSCAR criteria. Score >=4 indicates definite DRESS.
- Acne Severity Classification (IGA Scale)Classifies acne vulgaris severity using the Investigator Global Assessment (IGA) scale. Guides topical vs systemic vs isotretinoin prescribing.
- VIDA Score (Vitiligo Disease Activity)Assesses disease activity in vitiligo using the Vitiligo Disease Activity (VIDA) score. Guides treatment selection (immunosuppression vs phototherapy vs surgical).