A typical example of an immunologically mediated collagen vascular/connective tissue disorder is: (A) Lichen planus, (B) Pemphigus vulgaris, (C) Lupus erythematous, (D) Epidermolysis bullosa
Answer is C. 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.