Health Anxiety: This is an obsessive and irrational worry about having a serious medical condition. It's similar to Illness Anxiety Disorder but can also include behaviors like frequent doctor visits and excessive self-examination.
Somatoform Disorders: These are mental illnesses that cause bodily symptoms, including pain. The symptoms can't be traced back to any physical cause. They include disorders such as somatization disorder and conversion disorder.
Anxiety Disorders:A group of mental disorders characterized by significant feelings of anxiety and fear. Examples include generalized anxiety disorder (GAD), panic disorder, and social anxiety disorder.