a. A sprain refers to tearing of the ligaments in a particular joint. Some common areas for sprains are: ankles, wrists, shoulders, and elbows. The symptoms may include swelling, bruising, pain, and limited ability to move that area.
b. A strain is overstretching or tearing of a muscle or tendon. Some common symptoms may include pain, swelling, muscle spasms and limited ability to move the affected area.