Normal blood clots form in blood vessels when a clump of platelets (a type of blood cell) come together to stop bleeding when you have a cut or an injury. 

Blood clots can also form in healthy blood vessels when they aren’t needed. This is called an abnormal (not normal) blood clot. Abnormal blood clots can lead to serious health problems.

There are 2 types of blood clots that can be dangerous:

1. deep vein thrombosis – can happen when an abnormal blood clot forms in a vein deep inside your body, usually in your arm or leg.
2. pulmonary embolisms – can happen when an abnormal blood clot blocks the flow of blood in a blood vessel in your lung.

Treatment for a blood clot usually includes taking a blood thinner, also known as an anticoagulant. This is the most common treatment for blood clots. Blood thinners help prevent your body from making new clots.

Prevention
Adopting a healthier way of life by following a proper diet and exercising regularly is the basic preventive measure you can take. Discuss the type of exercises you can do with the healthcare provider. Exercising regularly ensures better circulation, thus averting the formation of blood clots. Now is as good a time as ever when it comes to quitting tobacco.

Treatment for a blood clot usually includes taking a blood thinner, also known as an anticoagulant. This is the most common treatment for blood clots. Blood thinners help prevent your body from making new clots.