Signs and symptoms

A cut or tear in the skin or other tissue, often with jagged edges.

A sudden, involuntary closing of the vocal cords that partly or fully blocks air from entering the lungs.

An area of tissue that has been damaged or has changed from normal, such as a sore, wound, lump or spot.

A state of being very drowsy, slow and hard to keep awake, or having little energy.

A thickened white patch on a mucous membrane, such as the mouth or vocal cords, that will not rub off.

A clenched fist held against the chest by a person describing chest pain.

An electric-shock feeling that runs down the back, and sometimes into the arms or legs, when the neck is bent forward.

A feeling of being faint or woozy, as if about to pass out.

Poisoning of the brain and heart when too much local anesthetic reaches the bloodstream.

Limited to one area of the body, rather than spread through it.

Pain in the lower part of the back, between the bottom of the ribs and the buttocks.

A fast-spreading infection under the jaw and in the floor of the mouth on both sides, which can swell and close the airway.

Swollen or enlarged lymph nodes.