What is the PASI score?

The Psoriasis Area and Severity Index (PASI) measures psoriasis severity by evaluating redness, thickness, scaling, and body surface area involvement across four body regions. Scores range from 0–72. PASI 75 (75% improvement) is the standard benchmark for treatment efficacy in clinical trials.

How is burn BSA estimated?

Burn body surface area is estimated using the Rule of Nines (adults) or Lund-Browder chart (children). In adults, each arm is 9%, each leg is 18%, the torso is 36%, and the head is 9%. The patient's palm (including fingers) represents approximately 1% BSA, useful for small or irregular burns.

What does ABCDE stand for in melanoma screening?

ABCDE is a mnemonic for identifying suspicious moles: Asymmetry, Border irregularity, Color variation, Diameter >6mm, and Evolving (changing over time). Any mole meeting one or more criteria should be evaluated by a dermatologist. The 'E' criterion (evolution) is considered the most important warning sign.

Dermatology Scoring Tools

Dermatology assessment tools including PASI for psoriasis severity, burns BSA estimation, DLQI quality of life index, and ABCDE melanoma screening criteria. Used for treatment decisions and disease monitoring.

This category currently includes 5 tools, including PASI Score, Burns BSA, and DLQI Score.

These resources are built for clinicians, trainees, and medically informed patients who need fast bedside calculations. Use the results as decision support and pair them with full clinical context and local guidelines.

All Dermatology Tools (5)

PASI Score

Calculate the Psoriasis Area and Severity Index (PASI) to assess psoriasis severity across four body regions. Scores range from 0 to 72. Pair with [DLQI Score](/tools/dlqi) for biologic eligibility assessment.

Burns BSA

Estimate total body surface area (TBSA) affected by burns using the Rule of Nines. Enter affected areas to calculate total burn percentage. Then use TBSA result in [Parkland Formula](/tools/parkland-formula) for fluid resuscitation.

DLQI Score

Calculate the Dermatology Life Quality Index (DLQI) to measure skin disease impact on quality of life. Score >10 indicates very large effect and is the NICE threshold for biologic therapy eligibility.

ABCDE Melanoma Check

Screen a mole against the ABCDE melanoma warning signs: Asymmetry, Border irregularity, Color variation, Diameter >6mm, and Evolving changes. Any positive sign warrants urgent dermatology evaluation.

Rule of Nines

Estimate total body surface area (TBSA) burned using the Rule of Nines. Head=9%, each arm=9%, each leg=18%, torso=36%. Burns ≥20% TBSA require IV fluid resuscitation with the Parkland formula.

Frequently Asked Questions

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