Infectious or chronic diseases such as long COVID, Alzheimer’s disease and traumatic brain injury can cause inflammation in the brain, or neuroinflammation, that weakens muscles. While scientists are ...

Muscle fatigue is a condition that reduces the ability of muscle to perform over time. While it is more commonly associated with exercise, it can also result from certain medications or underlying ...

Research reveals how brain inflammation triggers extreme muscle weakness across several diseases, including viral infection, bacterial infection and Alzheimer's disease. The study, in fruit flies and ...

With age, our muscle mass and strength naturally decline, sometimes developing into a condition known as sarcopenia.

Muscle cells' "power stations" function less effectively in people with long COVID, potentially explaining the persistent fatigue that's a hallmark of the condition. That's the finding of a Dutch ...

Occasional leg cramps are considered common and usually harmless, especially after physical exertion, dehydration, or ...

A new discovery may explain why so many people abandon cholesterol-lowering statins because of muscle pain and weakness.

Joint pain and weakness can be caused by a number of conditions, including acute injuries, infections, and chronic diseases. The outlook depends on the underlying cause. Share on Pinterest Getty ...

Leg cramps are typically harmless. Although they go away on their own, several at-home remedies may help relieve the symptoms. In this article, we explain what leg cramps are and what can cause them.