The hallmark symptoms of rheumatoid arthritis (RA) are painful, stiff, and swollen joints, but this autoimmune condition can damage other tissues and organs as well, including the body's largest organ ...

Learn how the severity of skin symptoms in psoriatic arthritis relates to joint health, disease progression, and treatment ...

Psoriatic arthritis (PsA) causes your immune system to attack your joints, but it can also affect many other parts of your body. PsA usually comes alongside psoriasis, a similar long-term, ...

RA can affect more than your joints—here are the symptoms doctors say are often overlooked.

Skin infections may be a side effect of certain medications. * THE QUESTION To control the swelling of rheumatoid arthritis, some people take drugs that target a protein that also is key to ...