A really good new male friend of mine was recently diagnosed with discoid Lupus rashes (which we thought were psoriasis). Further blood work came back that he showed antibodies for systemic Lupus. Both my friend, and I, are gay men living with HIV and I am wondering something. I've seen online that Lupus can cause a false positive for HIV. My question here is can HIV, in turn, cause a false positive result for Lupus?? He does have rashes on his back and shoulders but I've never seen a "tell-tale" butterfly rash anywhere on him.

PLEASE help me understand this! This is someone I care very deeply about and I want to know more so I can support him in whatever way I can!

Thanks, in advance!