This study has examined how teenagers diagnosed with Attention Deficit hyperactivity disorder experience their social relation with particular focus to weather or not the teenager are subjects of stigmatization due to their diagnosis. The study is based on qualitative interviews with teenagers in the age of eleven to fourteen years. The teenagers have a biological orientated understanding of the diagnosis and sees the disorder as a kind of malfunction in the brain, which they see as the reason why they experience difficulties such as problems with impulse control, anger issues and problems with concentration. As a result of these difficulties the teenagers sees them selves as being different or weird and feel like their peers look at them in a negative light. The teenagers are being bullied because of this and therefore it is argued that the teenagers are being stigmatized on the basis of these difficulties. But the teenagers also feels stigmatized by the diagnosis it self. They describe that they don’t want to tell people about their diagnosis because they are afraid that people will ascribe them negative qualities. Therefore that both the difficulties and the diagnosis it self is the base of stigmatization for the teenagers.