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Combination with alcohol and medicines can be harmful. Alcohol, like some medicine, will make you to sleepy, dozy, or faint.

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Home symptoms & signs in body region Fainting

Fainting

Alternative Names    Passed out; Lightheadedness - fainting; Syncope; Vasovagal

Definition

Fainting is a temporary loss of consciousness due to a drop in blood flow to the brain. The episode is brief (lasting less than a couple of minutes) and is followed by rapid and complete recovery. You may feel lightheaded or dizzy before fainting.

Considerations

When you faint, you not only experience loss of consciousness, but also loss of muscle tone and paling of color in your face. You may also feel weak or nauseated just prior to fainting, and you may have the sense that surrounding noises are fading into the background.

Causes

Fainting may occur while you are urinating, having a bowel movement (especially if straining), coughing very hard, or when you have been standing in one place too long. Fainting can also be related to fear, severe pain, or emotional distress.

A sudden drop in blood pressure can cause you to faint. Your blood pressure may drop suddenly if you are bleeding or severely dehydrated. It can also happen if you stand up very suddenly from a lying position.

Certain medications may lead to fainting by causing a drop in your blood pressure or for another reason. Common drugs that contribute to fainting include those used for anxiety, high blood pressure, nasal congestion, and allergies

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