Possible causes of Anxiety (Nervousness)

28 conditions can cause this symptom. Most common are listed first.

• Bipolar affective disorder (bipolar depression) Common
• Depression (excessive sadness) Common Urgent
• Hypoxia (lack of oxygen) Common Urgent
• Panic disorder Common
• Phobias (irrational fear) Common Pediatric
• Post-traumatic stress disorder (PTSD) Common Pediatric
• Stress Common
• Amphetamine abuse Urgent
• Adjustment disorder
• Alcoholism
• Anxiety disorder
• Arrhythmia (abnormal heart rhythm) Urgent
• Attention deficit hyperactivity disorder (ADHD)
• Body dysmorphic disorder (BDD)
• Drug overuse Urgent
• Dysthymia (neurotic depression)
• Hyperthyroid (elevated thyroid hormone) Urgent
• Hyperventilation (rapid breathing)
• Hypoglycemia (low blood glucose) Urgent
• Insomnia (difficulty sleeping)
• Major depressive disorder (severe depression) Urgent
• Medication reaction Urgent
• Narcotic (morphine, heroin) abuse
• Obsessive compulsive disorder (OCD)
• Personality disorder
• Prescription drug abuse
• Schizoaffective disorder
• Schizophrenia (psychiatric disease) Urgent