What are Knots in the back of your arm?

The knots in the back of your arm are most likely caused by one of two conditions: muscle knots or lipoma. Muscle knots, also known as trigger points, are small, tender areas of muscle that can form in response to injury, overuse, or stress. Lipomas are benign, fatty tumors that can grow anywhere in the body.

Muscle knots are usually small, round, and firm to the touch. They can be located anywhere in the back of the arm, but they are most common near the shoulder and elbow. Muscle knots can cause pain, tenderness, and stiffness. They may also make it difficult to move your arm freely.

Lipomas are usually soft, smooth, and movable. They can range in size from a small pea to a large grapefruit. Lipomas are not usually painful, but they can sometimes cause pain if they grow too large or if they press on a nerve.

If you have a knot in the back of your arm, it is important to see a doctor to get an accurate diagnosis. Your doctor will be able to determine the cause of the knot and recommend the best course of treatment.