Hypochondria is characterized by excessive worry that minor physical symptoms may indicate a serious illness, even when medical testing finds no evidence of disease. It is caused by a history of abuse or trauma, viewing health as a reflection of self, and fear of specific diseases promoted by media. Hypochondria is diagnosed through physical exams to rule out illness and psychiatric evaluation to exclude other disorders, and is treated with counseling to change anxious behaviors and medications to reduce negative thoughts about one's health.