What can cause a swollen upper lip?

Answer

If your lip has suddenly become swollen and enlarged, you may be experiencing a food allergy, and may progress to a serious condition called anaphylaxis. Symptoms of anaphylaxis include swelling of the throat, lips and tongue, difficulty breathing and swallowing, hives, flushed skin, cramps, nausea, increased heart rate and vomiting or diarrhea. In the most serious cases, you may go into anaphylactic shock and become unconscious.

If you think you may have eaten something that you are allergic to, and begin to notice swelling, seek immediate medical assistance because food allergies can be fatal.

If you have mildly swollen lip that recedes and then recurs, you may have a disease called hereditary angioedema. This condition causes repeated episodes of swelling beneath the surface of the skin, usually on the face, hands, feet, arms or legs.

If the swelling is minor, you may not need treatment, but some dangerous swelling includes that in the trachea or larynx which may obstruct the airway. Contact your doctor if you are experiencing chronic swelling.
Q&A Related to "What can cause a swollen upper lip?"
Swelling occurs when there is an accumulation of fluid in the tissues. Swelling of the upper or lower lips, tongue or throat is usually due to an allergic reaction or an injury. If
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yesterday I woke up and the upper left side of my lip was swollen. No sore, no zit, just swollen skin, but it did kind of hurt. last night I put rubbing alcohol on it before I went
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