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is also called fainting or passing out. Syncope is a sudden, temporary loss of consciousness, followed by a fall from a standing or sitting position. Syncope ranges from not serious to a sign of a more serious condition that needs to be treated. You can control some health conditions that cause syncope. Your healthcare providers can help you create a plan to manage syncope and prevent episodes.

Signs and symptoms that may occur before syncope include the following:

  • Cold, clammy, and sweaty skin
  • Fast breathing and a racing, pounding heartbeat
  • Feeling more tired than usual
  • Nausea, a warm feeling, and sweating
  • A headache, or feeling lightheaded or dizzy
  • Tingling sensation or numbness
  • Spots in front of your eyes, blurred vision, or double vision

Seek care immediately if:

  • You are bleeding because you hit your head when you fainted.
  • You suddenly have double vision, difficulty speaking, numbness, and cannot move your arms or legs.
  • You have chest pain and trouble breathing.
  • You vomit blood or material that looks like coffee grounds.
  • You see blood in your bowel movement.

Contact your healthcare provider if:

  • You have new or worsening symptoms.
  • You have another syncope episode.
  • You have a headache, fast heartbeat, or feel too dizzy to stand up.
  • You have questions or concerns about your condition or care.


depends on the cause of your syncope. To prevent syncope from happening again, you may need any of the following:

  • Medicines may be needed to treat any medical conditions that are causing your syncope. These may include medicines to help your heart pump strongly and regularly. Your healthcare provider may also make changes to any medicines that are causing syncope.
  • Tilt training involves training yourself to stand for 10 to 30 minutes each day against a wall. This helps your body decrease the effects of posture changes and reduces the number of fainting spells.

Manage syncope:

  • Keep a record of your syncope episodes. Include your symptoms and your activity before and after the episode. The record can help your healthcare provider find the cause of your syncope and help you manage episodes.
  • Sit or lie down when needed. This includes when you feel dizzy, your throat is getting tight, and your vision changes. Raise your legs above the level of your heart.
  • Take slow, deep breaths if you start to breathe faster with anxiety or fear. This can help decrease dizziness and the feeling that you might faint.
  • Check your blood pressure often. This is important if you take medicine to lower your blood pressure. Check your blood pressure when you are lying down and when you are standing. Ask how often to check during the day. Keep a record of your blood pressure numbers. Your healthcare provider may use the record to help plan your treatment.

Prevent a syncope episode:

  • Move slowly and let yourself get used to one position before you move to another position. This is very important when you change from a lying or sitting position to a standing position. Take some deep breaths before you stand up from a lying position. Stand up slowly. Sudden movements may cause a fainting spell. Sit on the side of the bed or couch for a few minutes before you stand up. If you are on bedrest, try to be upright for about 2 hours each day, or as directed. Do not lock your legs if you are standing for a long period of time. Move your legs and bend your knees to keep blood flowing.
  • Follow your healthcare provider's recommendations. Your provider may recommend that you drink more liquids to prevent dehydration. You may also need to have more salt to keep your blood pressure from dropping too low and causing syncope. Your provider will tell you how much liquid and sodium to have each day. He or she will also tell you how much physical activity is safe for you. This will depend on what is causing your syncope.
  • Watch for signs of low blood sugar. These include hunger, nervousness, sweating, and fast or fluttery heartbeats. Talk with your healthcare provider about ways to keep your blood sugar level steady.
  • Do not strain if you are constipated. You may faint if you strain to have a bowel movement. Walking is the best way to get your bowels moving. Eat foods high in fiber to make it easier to have a bowel movement. Good examples are high-fiber cereals, beans, vegetables, and whole-grain breads. Prune juice may help make bowel movements softer.
  • Be careful in hot weather. Heat can cause a syncope episode. Limit activity done outside on hot days. Physical activity in hot weather can lead to dehydration. This can cause an episode.

Follow up with your healthcare provider as directed:

Write down your questions so you remember to ask them during your visits.

© 2018 Truven Health Analytics Inc. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes. All illustrations and images included in CareNotes® are the copyrighted property of A.D.A.M., Inc. or Truven Health Analytics.

The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.