Symptom Search
70 possible causes of "Rapid heartbeat"
Symptoms:
  • Alteration in consciousness
  • Shock
  • Feels hot to touch
  • General weakness
  • Rapid heartbeat
  • Confusion
1. Caffeine Overdose
Caffeine overdose may occur when you ingest more than the recommended amount of caffeine, which is usually 200 to 300 mg per day. However, a safe amount of caffeine is different for everyone, as it depends on weight...
Symptoms:
  • Blood in stool
  • Shock
  • Clammy skin
  • Lightheadedness
  • Rapid heartbeat
  • Shortness of breath
2. Bleeding
Bleeding is the name commonly used to describe blood loss. It can refer to blood loss inside the body (internal bleeding) or blood loss outside of the body (external bleeding). Blood loss can occur in almost any area o...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Sleep paralysis
  • Chest pain
  • Tingling
  • Fear
  • Rapid heartbeat
  • Vomiting
3. Panic Disorder
Panic disorder occurs when you live in fear of having a panic attack. You are having a panic attack when you feel sudden, overwhelming terror that has no obvious cause. You may experience physical symptoms such as ...
Symptoms:
  • Dementia
  • Unequal pupils
  • Diplopia
  • Palpitations
  • Rapid heartbeat
  • Seizures
4. Low Blood Sugar (Hypoglycemia)
Also known as hypoglycemia, low blood sugar can be a dangerous condition. People often complain about low blood sugar. However, serious hypoglycemia is rare in adults and children over the age of 10 who are no...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Pain
  • Confusion
  • Chest pain
  • Tired
  • Rapid heartbeat
  • Dizziness
5. Atrial Fibrillation and Flutter
Atrial fibrillation and atrial flutter are irregular heart rhythms that occur when the upper chambers of your heart (the atria) beat too fast.Atrial fibrillation can be sustained or can occur in bursts. It creates a...
Symptoms:
  • Chest pain
  • Shortness of breath
  • Fainting
  • Palpitations
  • Rapid heartbeat
  • Dizziness
6. Abnormal Heart Rhythms
Have you ever felt your heart skip a beat? If you're not a character in a romance novel, that may mean you have an abnormal heart rhythm (arrhythmia). Within the heart is a complex system of valves, nodes, an...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Delirium
  • Rapid shallow breathing
  • Rapid heartbeat
  • Tremor
  • Rash
  • Warm skin
7. Sepsis
Sepsis is a life-threatening complication of infection. It often occurs in people who are elderly or have weak immune systems. Sepsis happens when the body suffers from an infection and the chemicals released into th...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Heart murmurs
  • Hot flashes
  • Vitiligo
  • Flushed complexion
  • Rapid heartbeat
  • Increase in blood pressure
8. Hyperthyroidism
The thyroid gland is a small butterfly-shaped gland located at the front of the neck below your Adam's apple. It produces tetraiodothyronine (T4) and triiodothyronine (T3), two hormones which control how your cells us...
Symptoms:
  • High blood pressure
  • Seizures
  • Dilated pupils
  • Nausea
  • Rapid heartbeat
  • Fever
9. Adrenergic Bronchodilators Overdose
An overdose happens when you take too much of a drug. Whether intentional or accidental, drug overdoses can be life threatening. Adrenergic bronchodilators overdose is when a person has taken too much of a certain typ...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Headache
  • Abnormal urine odor
  • Coma
  • No urine output
  • Rapid heartbeat
  • Chapped lips
10. Dehydration
Dehydration occurs when your body loses more fluid than you drink. When the body loses too much water, organs, cells, and tissues fail to function. Dehydration can also cause shock. Severe dehydration must be treate...
This condition is considered a medical emergency. Urgent care may be required.

This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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