Causes Of Severe Pain Inside of the Calf

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A sudden onset of pain can be scary, especially if you've done nothing to cause that pain. If you are suffering from severe pain in your calf, it could be for one of the following reasons. If you have consistent severe calf pain, you should contact a medical professional immediately.

Calf Strain

Calf strain is caused by twisting or stretching a muscle or tendon that creates a small tear in the muscle fibre. There are two types of strain. Acute calf strain is caused by a sudden trauma to the area, while chronic strain is the result of repetitive movement or usage of the calf muscle.

Circulation Disorders

Severe pain in your calf could be the result of a condition or disease that affects your circulatory system. The circulatory system includes your blood vessels and arteries and is responsible for transporting blood, proteins and other essential nutrients to and from the heart to the rest of the body. Although there are several types of disorders, they are typically placed into three categories: heart disorders, blood disorders and blood vessel disorders. These disorders can range from diabetes to cancer.

Compartment Syndrome

After an injury or an invasive procedure such a surgery, Compartment syndrome can occur. This syndrome is diagnosed when increased pressure occurs within a section of the body. This can affect blood flow, which can cause problems for the tissue in that area and lead to nerve damage, muscle damage and even amputation of the affected area. This is typically considered a medical emergency, especially when the symptom onset is sudden and without warning.


Thrombosis is a more scientific name for a blood clot. In most cases, the clots occur in deep veins that are normally located in the leg and especially the calf. A blood clot is an incredibly painful condition and can lead to serious complications. Not only can blood clots in the calf restrict circulation to the lower leg, but they can move to other areas of the body, such as the heart or the brain.

Baker's Cyst

A Baker's Cyst is a knot or a cyst on the back of the knee that usually is associated with certain forms of arthritis. Cysts like this can cause severe pain to shoot down the back of the leg. While they are less serious than some of the other causes of calf pain, you should still consult a medical professional if you have persistent severe pain.