Ifyou experience sudden attacks of severe knee pain and yourkneealso becomesred and hot, the cause is likely to be gout , whichis atype of arthritis.

Gout is caused by a build-up of uric acid (a waste product) in the body, which can form crystals in the joints. These crystals cause the joints to become inflamed and painful.

Gout will cause severe pain in the knee and limit movement of the joint. You may feel pain even when you're resting, including at night. Gout can affect any joint in the body and sometimes other joints such as the joint of your big toe may be affected before your knees.

You should see your GP ifyou think the cause of your knee painis gout. They may recommendusing ice packs and taking non-steroidal anti-inflammatory drug (NSAID) painkillers.You may also need to change your diet or receive additional treatment to prevent attacks if you experience them frequently. Youmay alsofeel generally unwell and have afever.

It can be mistaken for gout (see above). You should see your GP urgently, or go to your nearestaccident and emergency (A&E) department if you suspect you have septic arthritis.

Septic arthritis is treated by draining fluid from the knee before antibiotics are given. Occasionally arthroscopic surgery is needed to clear out the infection.

Content supplied by the NHS Website

Medically Reviewed by a doctor on 21 Dec 2018