A strain and a sprain are two different types of injuries to the body. A strain is an injury to a muscle or tendon, which are the fibrous tissues that connect muscles to bones. Strains can occur when a muscle is stretched too far or is forced to contract too quickly. Symptoms of a strain include pain, swelling, and difficulty using the affected muscle.
A sprain is an injury to a ligament, which is a band of tissue that connects two bones together. Sprains occur when a ligament is stretched too far or is torn. Symptoms of a sprain include pain, swelling, and instability of the affected joint. A sprain can sometimes be more serious than a strain and may require medical attention to ensure proper healing.