Spasm

A spasm is a sudden, involuntary muscle contraction that can cause pain and discomfort. It can occur in any muscle group and can be caused by a variety of different conditions. Symptoms of a spasm can include tightness, pain, and difficulty moving the affected muscle. Spasms can develop suddenly or over time, and can be mild or severe. They can last for a few seconds or several minutes, and can occur in a single muscle or multiple muscles. Manifestations of a spasm can include twitching, jerking, or trembling in the affected muscle.