Calculate the DAPSA score for psoriatic arthritis from joint counts, pain, global, and CRP. See if you're in remission, low, moderate, or high.
DAPSA measures disease activity in psoriatic arthritis by summing five components: the 68-joint tender joint count, the 66-joint swollen joint count, patient pain VAS (0–10), patient global VAS (0–10), and CRP in mg/dL. It captures both the joint burden and the patient-reported impact of the disease.
Gather each input from the current assessment: count every tender joint across the 68 examined joints and every swollen joint across the 66 examined joints, record the patient's pain and global disease activity on 0–10 cm visual analogue scales, and use the most recent CRP in mg/dL (leave blank if unavailable — it is scored as 0).
Interpret the total as follows: remission ≤ 4, low disease activity > 4–14, moderate disease activity > 14–28, and high disease activity > 28. Use the score to guide treatment decisions and monitor response over time — not as the sole basis for individual management.