Why would I have swelling in both knees and elbow?

See a rheumatologist. There are numerous causes for an inflammatory arthritis. See a rheumatologist to determine the cause and to start appropriate treatment.
I'm concerned. Young woman with multiple joint swelling is always concerning for autoimmune disease such as lupus, rheumatoid arthritis and other syndromes. The real concern is that they may be organ damage occurring such as to the liver, kidneys, blood vessels. I would immediately see your general practitioner, family doctor. He will start with ordering a spectrum of laboratory tests.

Related Questions

Have DX's with bursitis in both knees. Can it spread to other parts of the body? Neck? Elbows? Thanks-

Depends. It depends what is causing the Bursitis. If it is due to Arthritis a Rhematologist could help. If due to structural knee derangement an Orthopedic physician may be useful for knee injection. Family practitioners could prescribe an anti inflammatory med.
Best to get a checkup or referral to Rheumatology , or Orthopedics for further workup or repeat visit . It usually does not spread. Read more...
Depends. If the knee bursitis is due to a local cause, e.g. overuse or abuse of the knee, then bursitis should not spread to other joints. If the bursitis is a manifestation of a systemic disorders, e.g. autoimmune arthritis, then it could affect other joints. It would be prudent to consult a rheumatologist. Read more...
No. No, it is not like that. You can develop a bursitis in more than one area, as you have with both of your knees, but it is not because one bursitis spread to another area. Just like you can break your arm and break your leg, but it is not because one break "spread" to the other. Read more...

Swelling behind both knees and gets stiff if standfing to long. I am a hairdresser and work out 4 times a week doing kick boxing and zumba.

Need a diagnosis. Treatment is diagnosis and not symptom driven. You need to see a physician and if appropriate get x rays to see if you have arthritis in the knees. If you do, conservative treatment which may include avoiding impact sports until your symptoms abate. Read more...
Standing. For long periods of time can reduce venous return leading to blood pooling in the lower extremities. High fitness levels will improve blood flow throughout the body but venous return is gravity dependent. Read more...

What does it mean when both knees are swelling and it hurts crouch down and get back up plus walk upstair?

Internal knee issues. Knee swelling and pain with squatting are common findings with meniscal tears. Knee pain with stairs is usually related to degenerative cartilage behind the knee cap. An orthopedic surgeon can evaluate your knees and help determine what is causing your pain. Read more...

I am 30yrs old female, wt 84, ht 5.7, I have swelling & some degenerative changes on both knees, can I use treadmill for walking to wt reduction?

Yes, but. While walking is a great exercise, if the degenerative changes in the lower extremities are severe, a less impactful activity might be less painful. Swimming or cycling might be less stressful to the knees. Read more...