There are more than 100 types of arthritis and related conditions

Dear Doctor: I understand that there may be a connection between rheumatoid arthritis and your gut microbiome. I'm newly diagnosed with RA, so I'm very interested in learning more about that.

Dear Reader: Arthritis refers to a collection of diseases in which inflammation in the joints causes stiffness, swelling, pain and sometimes physical damage.

There are more than 100 different types of arthritis…