generalized pustular eruption occurred 3 days after the delivery. A partial resolution was achieved with oral prednisolone (40 mg od) slowly tapered, but a satisfactory clinical response was only obtained with methotrexate (20 mg/week), leading to a complete resolution of the skin lesions at the 8th week of therapy. The newborn was a healthy male with no significant skin lesions.A new episode of generalized pustular eruption arose 1 year later, during the 20th week of an additional pregnancy. The patient was readmitted, and a very satisfactory clinical response was obtained with oral prednisolone (30 mg od), but a complete resolution was only observed 2 months after the delivery. The second son was also a male with no skin lesions until the age of 3 months, when he was observed with several well-demarcated erythematous plaques with superficial silver-white coloured crusts on the scalp and anterior aspect of lower limbs, clinically suggestive of plaquetype psoriasis.IH is a rare pustular eruption of pregnancy with unknown aetiology. It is frequently classified as a form of generalized pustular psoriasis, 1,2 and it normally occurs during the third trimester of pregnancy, significantly improving in the puerperium with possible recurrences in subsequent pregnancies. 3 It is associated with increased mother/foetal morbidity and mortality. 4 Systemic steroids are the mainstay of treatment. However, other drugs such as PUVA, retinoids and cyclosporin have been used either as single-agent or in combination therapies, particularly in poorly controlled disease. 5 The use of methotrexate in IH has been reported in three cases, two of them successfully. 3,5,6 Principally during the puerperium, a good outcome with methotrexate can be expected, as occurred in our patient.Several remarkable features have to be signalled in this case (i.e. the manifestation of the disease in a primigravida, the uncommon puerperal outbreak obligating to perform an aggressive systemic treatment, the recurrence during the second pregnancy at an early stage and the presence of psoriatic lesions in the second 3-monthold son). According to the clinical and histopathologic signs, the excellent response to methotrexate, which has proven efficacy in pustular psoriasis, and the coexistence of early onset psoriasis on the second son, we believe that IH can be really considered a variety of generalized pustular psoriasis.
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