Anxiety may be caused by a mental condition, a physical condition, the effects of drugs, or a combination of these. The doctor’s initial task is to see if your anxiety is a symptom of another medical condition.
Common causes of anxiety include these mental conditions:
- Panic disorder: In addition to anxiety, common symptoms of panic disorders are palpitations (feeling your heart beat), dizziness, and shortness of breath. These same symptoms also can be caused by coffee (caffeine), amphetamines (“speed” is the street slang for amphetamines when they are not prescribed by a doctor), an overactive thyroid, abnormal heart rhythms, and other heart abnormalities (such as mitral valve prolapse).
- Generalized anxiety disorder
- Phobic disorders
- Stress disorders
These common external factors can cause anxiety:
- Stress at work
- Stress from school
- Stress in a personal relationship such as marriage
- Financial stress
- Stress from global occurrences or political issues
- Stress from unpredictable or uncertain world events, like a pandemic”
- Stress from an emotional trauma such as the death of a loved one
- Stress from a serious medical illness
- Side effect of medication
- Use of an illicit drug, such as cocaine
- Symptom of a medical illness (such as heart attack, heat stroke, hypoglycemia)
- Lack of oxygen in circumstances as diverse as high altitude sickness, emphysema, or pulmonary embolism (a blood clot in the vessels of the lung)
The doctor has the often-difficult task of determining which symptoms come from which causes. For example, in a study of people with chest pain — a sign of heart disease — 43% were found to have a panic disorder, not a heart-related condition.
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