Are Hidradenitis and Rheumatoid Arthritis Related?

I am a 29 yr old non-obese female who was diagnosed with hidradenitis in 1992 and RA in 1993. I've seen info that shows a relationship between the diseases and would like more information. Anything would be helpful. Thanks.

I am unaware of hidradenitis suppurativa being related at all to rheumatoid arthritis. Hidradenitis suppurativa has been related to an inflammatory arthritis that can cause inflammation of many joints. While it could mimic rheumatoid arthritis, it is not true rheumatoid arthritis and has different associated features (notably that blood testing for rheumatoid factor is usually negative). Hidradenitis suppurativa has also been related to a rare disease that can be associated with joint inflammation (arthritis) called Behcet's disease.