| psychological difficulties related to human immunodeficiency virus-1 infection in intravenous drug users. | psychopathology and emotional changes were examined over a 9-month period in this study of human immunodeficiency virus-1 (hiv-1) infection in seronegative and seropositive intravenous drug users. the hiv-1-seropositive group showed more psychological difficulties and emotional distress at both testings. for the hiv-1-seronegative subjects, a trend for less psychopathology and psychological distress was found. at the second testing, the difference between groups was increased due to improvement ... | 1994 | 7976445 |