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 ...

Primary lateral sclerosis (PLS) is a motor neuron disease variation of ALS (amyotrophic lateral sclerosis) but far more rare. PLS refers to patients who seem to have disruptions with only upper motor ...

Common causes of low back pain include muscle strain, trauma, osteoporosis, and autoimmune disorders.

Lambert-Eaton myasthenic syndrome (LEMS) causes the body to attack nerves, resulting in muscle weakness in the arms and legs. It often occurs due to underlying conditions such as small cell lung ...

If you have a sharp pain in the front thigh, it may be due to a muscle tear, groin pull, inguinal hernia, or several other causes. Here, a doctor weighs in.

My wife (age 59) has very poor leg strength. This has been the case for a number of years now, and her deceased mother had similar problems. Walking up a flight of stairs, especially if they are ...

Paresthesia describes the tingling or pins and needles sensation in the skin due to conditions affecting the nerves. Causes of tingling in the middle of the back can include infections or structural ...

Dear Reader: Swelling of the legs from a buildup of extra fluid is known as edema. In addition to the swelling, the skin above the swollen area is stretched and shiny. Your doctor can easily check for ...