[header] How to diagnose body dysmorphic disorder [title] Notice obsessive negative thoughts about physical flaws. [step] People with body dysmorphic disorder are consumed with negative thoughts about their appearance. They may obsess over flaws that others do not even notice or consider minor. 
They may be convinced that they are ugly even if others find them attractive, and may frequently compare themselves to others. [substeps] The negative thoughts can be centered around any aspect of the physical appearance, including but not limited to weight, muscle tone, facial features, skin, and hair.