Polineuropatia periférica em pacientes com lúpus eritematoso sistêmico juvenil

Abstract

INTRODUCTION: Peripheral polyneuropathy is one of 19 neuropsychiatric syndromes seen in systemic lupus erythematosus, according to the classification criteria proposed by the American College of Rheumatology (ACR) for neuropsychiatric syndromes. However, this manifestation has not been reported very often, especially in patients with juvenile systemic lupus erythematosus (JSLE). PATIENTS AND METHODS: From 1983 to 2007, 5,079 patients were seen at the Pediatric Rheumatology Unit of the ICr-HC-FMUSP; 228 (4.5%) patients were diagnosed with JSLE according to the criteria of the ACR. Peripheral polyneuropathy was diagnosed according to the criteria for neuropsychiatric syndromes of the ACR. RESULTS: Five (2.2%) out of 228 patients with JSLE developed peripheral polyneuropathy and were described retrospectively. The diagnosis was confirmed by electroneuromyography, which showed the presence of distal peripheral polyneuropathy, sensorial and/or motor, involving all four limbs, in two patients, and the lower limbs, in three patients. Three of those patients were females, and peripheral neuropathy developed after the diagnosis of JSLE. The mean age of onset of the disease was 14 years, and the mean time between the onset of JSLE and the diagnosis of peripheral polyneuropathy was 23 months. The most common clinical presentations included muscular weakness and hyporeflexia. Antiphospholipid antibodies were present in all patients. Treatment consisted of corticosteroids in all patients, associated with intravenous cyclophosphamide in three patients. One patient evolved to functional disability and paresis of the lower limbs, requiring a wheelchair. One female patient died of severe sepsis. CONCLUSIONS: Peripheral polyneuropathy is a rare, severe, and occasionally incapacitating manifestation of JSLE, commonly associated with the presence of antiphospholipid antibodies.