Investigation of the Correlation between Postherpetic Itch and Neuropathic Pain over Time

Table 3

Prevalence of PHI.

		Acute stage	Subacute stage	Chronic stage
		No of patients (%)	No of patients (%)	No of patients (%)
PHI	Total	47 (62%)	28 (37%)	34 (45%)
Severity of itch	Mild	23 (49%)	24 (86%)	27 (79%)
	Moderate	13 (28%)	3 (10%)	5 (15%)
	Severe	11 (23%)	1 (4%)	2 (6%)

PHI (+): strength scale ≥1; itch severity: 11 grades of severity on a scale from 0 to 10; 0 = none; 10 = worst itching possible; mild (rated as 1–3 on a scale of 0–10); moderate (rated as 4–7 on a scale of 0–10); severe (rated as 8–10 on a scale of 0–10).