4. Sprain

A sprain is an injury to the ligaments of a joint by their sudden and excessive stretching with torsion. It is characterized by severe pain, much swelling of the affected area, and sometimes bruising of the skin.

There may be a genetic predisposition to sprains, but these usually occur when there is an overload of the joints. Being among athletes, I realized that this is a very common injury that even coaches learn to handle when they are mild. There are three degrees of strain depending on the severity of the injury:

Harrygouvas, CC BY-SA 3.0

FIRST DEGREE SPRAIN

This is a minor stretching injury with swelling and moderate pain.