Matthews C N, Saihan E M, Warin R P
Br J Dermatol. 1978 Oct;99(4):455-7. doi: 10.1111/j.1365-2133.1978.tb06188.x.
A cases of systemic lupus erythematosus is reported, presenting with urticaria-like lesions and complement deficiencies, which was completely controlled by dapsone.