Is arthritis communicable?
No you cant catch it from someone else. However there is very little doubt that a weakness for it can be passed on genetically.
Communicable diseases are the kind caused by germs that can spread from one person to another. The most familiar example is the common cold. You can give someone your cold. Some diseases are not communicable. For example, you don't get arthritis by being exposed to someone else who has arthritis. It is just a disease of aging, the body wears out.
No if you mean can your lover contract Rheumatoid arthritis as a result of having sex with you ,No it is not. Rheuamtoid arthritis is an autoimmune disease which is caused by the way the body organizes its immune system. People with Ra can even donate blood without any fear of passing it on. It can however be passed on genetically to the children.