Body Dysmorphic Disorder (BDD) is characterized by an excessive preoccupation with perceived defects in physical appearance, leading to significant distress and impairment in daily functioning. It often co-occurs with other mental health issues and typically begins in adolescence, affecting about 1-2% of the population equally across genders. Treatment involves cognitive therapy and medication, notably SSRIs, with a focus on managing symptoms and preventing relapse, as untreated BDD can lead to severe complications such as depression and social isolation.