Figure 1From: Predictors of pain intensity and persistence in a prospective Italian cohort of patients with herpes zoster: relevance of smoking, trauma and antiviral therapy Pain intensity at presentation and the risk of PHN at different time intervals. Proportion of patients developing PHN at different time intervals according to pain intensity at presentation. Patients with PHN were 51.2% (n = 226) at one month after enrolment; 30.0% (n = 130) after one to three months; 9.8% (n = 43) after three to six months; 7.5% (n = 33) after 6 to 12 months.Back to article page