According to the 2012 survey conducted by Workplace Bullying Institute (516 respondents), Anticipation of next negative event is the most common psychological symptom of workplace bullying reported by 80%. Panic attacks afflict 52%. Half (49%) of targets reported being diagnosed with clinical depression. Sleep disruption, loss of concentration, mood swings, and pervasive sadness and insomnia were more common (ranging from 77% to 50%). Nearly three-quarters (71%) of targets sought treatment from a physician. Over half (63%) saw a mental health professional for their work-related symptoms. Respondents reported other symptoms that can be exacerbated by stress: migraine headaches (48%), irritable bowel disorder (37%), chronic fatigue syndrome (33%) and sexual dysfunction (27%).