A typical example of an immunologically mediated collagen vascular/connective tissue disorder is
Lichen planus
Pemphigus vulgaris
Lupus erythematous
Epidermolysis bullosa
Systemic Lupus Erythematosus is a multisystem autoimmune disease characterised by autoantibodies, immune complex formation and immune dysregulation resulting in damage to kidney, skin, blood vessels, CNS. Pemphigus, Lichen planus, epidermolysis bullosa are mucocutaneous disorders.