Social phobia and selective mutism.

Social phobia (SOP) and selective mutism (SM) are related anxiety disorders characterized by distress and dysfunction in social situations. SOP typically onsets in adolescence and affects about 8% of the general population, whereas SM onsets before age 5 and is prevalent in up to 2% of youth. Prognosis includes a chronic course that confers risk for other disorders or ongoing social disability, but more favorable outcomes may be associated with young age and low symptom severity. SOP treatments are relatively more established, whereas dissemination of promising and innovative SM-treatment strategies is needed.