Patients infected with HIV treated with highly active antiretroviral therapy (HAART) frequently develop body physical changes (BPC) that have an important psychosocial burden. The purpose of this study was to determine the prevalence of BPC observed by HIV-infected patients and their attending physicians and to assess the impact BPC had on daily life. In this epidemiologic multicenter study, patients with HIV infection and their treating physicians filled out parallel questionnaires about their perceptions of specific BPC and their impact on daily activities. A total of 965 patient-physician questionnaires were collected across 98 health centers. Patient's mean age was 43.7 +/- 8.5 years and 72.6% were men. Adjusted prevalence of perceived BPC by patients and physicians was 55.1% (95% confidence interval [CI]: 52.0-58.1) and 55.2% (95% CI: 52.1-58.2), respectively (p = 1.000). Overall patient-physician agreement concerning perception of BPC was 83% (p < 0.0005). The most common BPC was lipoatrophy, described by 46.8% (95% CI: 43.7-49.8) of patients and 49.4% (95% CI: 46.3-52.5) of physicians (p = 0.033) followed by lipohypertrophy. No gender differences were observed in the global prevalence of BPC (p = 0.649). However, significantly more women reported lipoatrophy of the lower limbs (p = 0.009) and buttocks (p = 0.007), as well as lipohypertrophy (p = 0.007), than men; 58.2% (95% CI: 54.0-62.4) patients noted that BPC negatively affected their daily activities. This study reflects the high prevalence of patient and physician-perceived BPC in the HIV population, and the adverse impact on daily life. Physicians should be aware of the psychosocial consequences of BPC in HIV patients in order to improve patient well-being.