The discoloration and swelling that may accompany a muscle strain is due to damaged or ruptured blood vessels. This causes bleeding and bruising.
Ruptured blood vessels
There are several different symptoms to watch for if you think you have a muscle strain. Some of these symptoms include swelling, bruising, redness, open cuts, pain, weakness, and inability to use the muscle.
A strain is a torn or stretched muscle or tendon.
Is there any cure for muscle strain down the thigh.
Strain
Muscle strain
A strain, or pulled muscle, is an injury in which a muscle or its attaching tendons are torn due to overstretching. It is often associated with fatigue, muscle overuse and improper movement.
Its called a strain
Repetitive Strain Injury or RSI.
Strain - muscle/tendons Sprain - ligaments
A strain is when you tear the muscle tissue slightly by over-stretching it. They occur when you put too much stress on the muscle - for example, by trying to lift something too heavy or by twisting too far.
A strain is damage to a muscle. It can be as little as a 'pull' or as bad as a tear in the fabric of the muscle.