There's also psoriasis (and psoriatic arthritis), where it's been firmly established that one subtype — guttate psoriasis — is triggered by _Streptococcus pyogenes_, which also causes strep throat, which is very common.
This is a strain of bacteria that can also cause rheumatic fever, which has an autoimmune component; it's capable of molecular mimicry, which causes the body to develop antibodies against itself. So the thinking goes that many strep bacteria can linger in the body and cause autoimmunity.
This is a strain of bacteria that can also cause rheumatic fever, which has an autoimmune component; it's capable of molecular mimicry, which causes the body to develop antibodies against itself. So the thinking goes that many strep bacteria can linger in the body and cause autoimmunity.