Medically reviewed by Matthew Wosnitzer, MDKey TakeawaysBladder spasms happen when the bladder muscle squeezes without ...

Lockjaw (trismus) is a painful condition that limits your ability to open your mouth all the way. It occurs when the muscles you use to chew spasm, meaning they can’t relax completely. The term ...

You’re sitting at your computer when it starts — that annoying flutter in your eyelid that feels like a tiny butterfly trapped under your skin. Most of the time, eye twitching is harmless and goes ...

A cricopharyngeal spasm occurs when the cricopharyngeus muscle in the throat is overly or excessively contracted. Remedies can include coping techniques at home and medical treatments for the ...