My 22 yr old son has extreme pain and leg spasms in his right knee, the pain starts in h is rt knee cap and then extends down to the leg, the spasms are so bad his leg jumps off the sofa, the spasms go on for 3-5 seconds. CAT scan, xray, now an MRI done, nothing seen, trying to get into neuro consult, but that is taking forever. This has been going on for 2-3 months, the spasms stopped for about 2 weeks, now they are back again. Any suggestions??