Health Library
The Health Library is a collection of health and wellness resources created for learning and accessibility. Select a topic below for related health information or search for a topic in the search bar for more information on other medical conditions.
Spasticity
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Spasticity is a condition in which muscles are tight or stiff. For example, your hand may stay clenched in a fist or your knee may be hard to bend. At times the muscles may jerk or spasm uncontrollably. It can interfere with your ability to move,...
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After a stroke, the injury to the brain can cause muscles to contract or flex on their own when you try to use an arm or leg. The sensation can be painful. It has been described as a "wicked charley horse." Because the muscle cannot move in its full range of motion, the tendons and soft tissue surrounding the muscle can...