Morning stiffness
Another characteristic of rheumatoid arthritis is stiffness in the joints in the morning.
Again, this is also a common problem in osteoarthritis, which can cause pain after long periods of inactivity, like sleeping.
The difference between the two is that osteoarthritis pain usually subsides in about a half hour. Stiffness from rheumatoid arthritis will last much longer, possibly for a good chunk of the day.
The right kind of exercise can help alleviate stiffness for people with RA and osteoarthritis pain.