This study investigated on body sysmorphic disorder as a correlate of physical and biological development among adolescents Warri South Local Government Areas Delta  State. Three research questions were developed to guide the study. The study adopted the correlational research design with a sample of 106 secondary school students drawn through convenience sampling technique. Two instruments were used for data collection which were the Perceived Body Dysmorphic Disorder Scale (PBDDS) and the Adolescent’s Physical and Biological Development Questionnaire (APBDQ) developed by the researcher. Validity and reliability of the instruments were established. Data analysis was done using Pearson Product Moment Correlation to answer the research questions, while t-test was used to test the corresponding null hypotheses. Result revealed that body dysmorphic disorder has a negative relationship with the physical and biological development of male and female adolescent students. On the basis of these results, it was recommended that effort should be made to ensure the adolescents receive proper awareness on the dangers of BDD so that they can take up appropriate intervention and assistance from relevant authorities.