Nail Psoriasis Severity Index (NAPSI) Calculator

Calculates the Nail Psoriasis Severity Index for all 20 nails assessing nail bed (onycholysis, subungual hyperkeratosis, oil drops, splinter hemorrhages) and nail matrix (pits, leukonychia, red spots, crumbling) features.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
Advertisement

How to Use

Enter the values for the scenario you are assessing. Calculates the Nail Psoriasis Severity Index for all 20 nails assessing nail bed (onycholysis, subungual hyperkeratosis, oil drops, splinter hemorrhages) and nail matrix (pits, leukonychia, red spots, crumbling) features. Use the napsi score result to inform your calculation.

Related Calculators

PASI Score

Medical Calculators

DLQI Score

Medical Calculators

SALT Score AA

Medical Calculators

Frequently Asked Questions