Can autoimmune disease cause total heart block? if yes, is it reversible?

Lupus is known to cause myocarditis in some and can cause heart block. May be benign - doesn't need additional intervention or may resolve - but others may need a pacemaker. Other autoimmune dieases such as Sjogren's can also be associated . F/u/w/ MD https://www.verywellhealth.com/lupus-and-the-heart-1746057 https://pubmed.ncbi.nlm.nih.gov/3161532