Granuloma annulare skin condition

I have had Granuloma annulare which is a non-contagious skin condition I've been told is autoimmune related, that causes raised, reddish or bumps in a ring or circle pattern for at least 20 years. It most often appears on the hands, feet, wrists, and ankles but it's recently on my shoulders. The exact cause is unknown, it is not harmful, and the rash is said to go away on its own within two years, but it hasn't gone away. And I have red splotches on my torso as well. Has anyone else had this condition and been able to treat it? Cortisone cream has not worked. I did have Rheumatoid Arthritis so I know I have autoimmune issues.