Photo: Nick Anderson of Greenville, N.C., left, his father Rick Anderson and stepbrother Jeramie Mullis pose with the 143-pound blue catfish caught Saturday in Virginia in Buggs Island Lake, also known as the Kerr Reservoir. The previous world record was a 130-pounder caught in the Missouri River last year.
A muscle cramp is a strong, painful contraction or tightening of a muscle that comes on suddenly and lasts from a few seconds to several minutes. It often occurs in the legs. A muscle cramp is also called a charley horse. Nighttime leg cramps are usually sudden spasms, or tightening, of muscles in the calf.
A muscle spasm is a painful, involuntary movement or contraction of a muscle. A muscle spasm is also known as a muscle cramp. Muscle spasms and cramps are not the same as muscle twitching, which refers to very fine involuntary movements (fasciculations) of a small segment of muscle.Skeletal muscles are muscles attached to bones that you control to move your body.uscle cramps are often caused by or worsened when you are dehydrated and not getting enough fluids. Muscle spasms and cramps can also be caused by neuromuscular disorders, such as multiple sclerosis or a spinal cord injury. Movement disorders called dystonias also lead to forceful contractions.