 In young adult cancer survivors, one small study found that 20% of participants met the full clinical diagnosis of post-traumatic stress disorder (PTSD), and 45% to 95% displayed at least one symptom of PTSD.Survivors of adult cancer are at an increased risk of suicidal ideology (having thoughts about suicide), while as many as 13% of childhood cancer survivors experience suicidal ideology.Issues of pain and physical ailments have been hypothesized as major contributing factors in cancer survivors experiencing this suicidal ideology.