Diclofenac: a new trigger of pemphigus vulgaris?

Many drugs have been shown to induce pemphigus, including thiol and nonthiol drugs. We present a case of pemphigus vulgaris where a nonsteroidal anti-inflammatory medication, diclofenac in suppositories and topical gel preparations, is suspected of having triggered the disease. The temporal relationship between drug and outbreak of disease together with the positive migration inhibition factor test to diclofenac point to the possible involvement of this drug in triggering pemphigus vulgaris.