A ganglion cyst is a fluid-filled swelling that can occur near a joint or tendon. They are usually harmless but can be rather unsightly. The cyst can range from the size of a pea to the size of a golf ball. They most commonly form on the back of the wrists but can appear near any joint including on your feet, ankles and other parts of your hand too.
Ganglion cysts look and feel like a smooth but hard lump under the skin. They're made up of a thick, jelly-like fluid called synovial fluid, which surrounds joints and tendons to lubricate and cushion them during movement.
It is not clear why ganglion cysts form. They seem to occur when the synovial fluid that surrounds a joint or tendon leaks out and collects in a sac.
Local commissioning policies are in place for this condition
Please be aware that there are local commissioning policies in place for this condition. This means that certain treatments may not be available to you on the NHS. This is because these treatments have been assessed by experts as less effective, with more side effects or only work well in certain scenarios. Overall, it is better to use other treatments at least initially.
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