Frequent exposure to victimization or bullying was related to high risks of depression, ideation and suicide attempts compared to those not involved in bullying. Nicotine dependence is also associated with depression, anxiety, and poor dieting, mostly in young men. Although causal direction has not been established, involvement in any sex or drug use is cause for concern. Children who develop major depression are more likely to have a family history of the disorder (often a parent who experienced depression at an early age) than patients with adolescent- or adult-onset depression. Adolescents with depression are also likely to have a family history of depression, though the correlation is not as high as it is for children. Comorbidity
There is also a substantial comorbidity rate with depression in children with anxiety disorder, conduct disorder, and impaired social functioning. Particularly, there is a high comorbidity rate with anxiety, ranging from 15.9% to 75%. Conduct disorders also have a significant comorbidity with depression in children and adolescents with a rate of 23% in one longitudinal study. Beyond other clinical disorders, there is also an association between depression in childhood, poor psychosocial and academic outcomes, as well as a higher risk for substance abuse and suicide.The prevalence of psychiatric comorbidities during adolescence may vary by race and ethnicity. Social causes
Adolescents are engaged in a search for identity and meaning in their lives. They have also been regarded as a unique group with a wide range of difficulties and problems in their transition to adulthood.
Pyodermatitis vegetans can refer to:

Pyostomatitis vegetans
Blastomycosis-like pyoderma