Differential Diagnosis for Racing Heart and Thoughts

• Single most likely diagnosis
  • Anxiety Disorder: This is the most likely diagnosis because racing heart and thoughts are common symptoms of anxiety disorders, such as generalized anxiety disorder or panic disorder. These symptoms can be triggered by stress, fear, or other emotional stimuli.
• Other Likely diagnoses
  • Hyperthyroidism: An overactive thyroid gland can cause symptoms such as a racing heart, nervousness, and difficulty concentrating, which may be mistaken for anxiety.
  • Caffeine or Stimulant Intoxication: Consuming high amounts of caffeine or other stimulants can lead to symptoms like a racing heart, jitteriness, and rapid thoughts.
  • Sleep Deprivation: Lack of sleep can cause symptoms such as a racing heart, difficulty concentrating, and disorganized thoughts.
• Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
  • Pheochromocytoma: A rare tumor of the adrenal gland that can cause episodes of rapid heart rate, hypertension, and anxiety-like symptoms. Missing this diagnosis could be life-threatening.
  • Thyrotoxic Crisis: A life-threatening condition that occurs when the thyroid gland produces excessive amounts of thyroid hormones, leading to symptoms such as a racing heart, fever, and confusion.
  • Cardiac Conditions (e.g., Arrhythmias, Myocardial Infarction): Certain heart conditions can cause a racing heart and may be accompanied by symptoms like chest pain, shortness of breath, or dizziness.
• Rare diagnoses
  • Attention Deficit Hyperactivity Disorder (ADHD): While not typically characterized by a racing heart, some individuals with ADHD may experience symptoms like rapid thoughts and restlessness.
  • Bipolar Disorder: During manic or hypomanic episodes, individuals with bipolar disorder may experience rapid thoughts, increased energy, and a racing heart.
  • Neurological Conditions (e.g., Temporal Lobe Seizures, Multiple Sclerosis): Certain neurological conditions can cause symptoms like rapid thoughts, anxiety, and a racing heart, although these are less common.