These symptoms may cause behavioral changes that include staying away from persons, places, or things that stimulate the symptoms. Anxiety may also cause behaviors that eat away at a person's confidence in what they can do. Family and friends may not understand why you are worried about things that do not worry them. It may be hard for them to understand your symptoms and how difficult it is for you. Another stress related illness is depression .
Depression is caused by changes in the brain and in other parts of the body that produce hormones.
These hormones usually keep us feeling good. In depression, however, these hormones are not in the right balance. When these hormones are out of balance, often a person feels quite ill. People with depression feel tired and sleep poorly. They are uninterested in eating, enjoyable activities, and sex.