Experiencing a chronic medical condition or severe or frequent illness can also increase risk for anxiety disorders, as well as dealing with significant illness of a family member or loved one. Given that several medical conditions have been linked to significant anxiety, in some cases a physician may perform medical tests to rule out an underlying medical condition. For instance, thyroid disease is often characterized by experiencing significant symptoms of anxiety. Menopause, heart disease, and diabetes have also been linked to anxiety symptoms. Additionally, drug abuse or withdrawal for many substances is characterized by acute anxiety, and chronic substance abuse can increase risk for developing an anxiety disorder. Anxiety can also be a side effect of certain medications. Experiencing significant sleep disturbances, such as difficulty falling asleep or staying asleep, may also be a risk factor for developing an anxiety disorder.
People with panic disorder often worry about when the next attack will happen and actively try to prevent future attacks by avoiding places, situations, or behaviors they associate with panic attacks. Worry about panic attacks, and the effort spent trying to avoid attacks, cause significant problems in various areas of the person’s life, including the development of agoraphobia (see below).