Some time ago my husband started to get pain in his joints. Actually it was mainlyh in the joints in his hands and arms. He didn't go to a doctor for quite some time, but at a certain moment it became unmanageable. He first went to see our regular doctor, but that one could not do much for him and sent him to a specialist. There they put electric pulses on him and by that they seemed to be able to measure if his nerves had an issue. And they did. So the next step was to get the thing fixed as by then he could not sleep anymore because of the pain. Good thing is that there was not a big queue and they could soon help him.