NORMOCOMPLEMENTEMIC URTICARIFORM VASCULITIS: ONE OF THE VARIOUS FORMS OF LEUCOCYTOCLASTIC VASCULITIS (Atena Editora)

Abstract

BACKGROUND Urticarial vasculitis is a cutaneous vasculitis characterized by urticarial lesions lasting more than 24 hours, histopathologically presenting as leukocytoclastic vasculitis. It is a clinical-pathological entity caused by the deposition of immune complexes in arterioles, capillaries, and post-capillary venules in the skin. It can be divided into two groups based on complement levels: normocomplementemic and hypocomplementemic. OBJECTIVES To discuss a rare rheumatological disease of high severity and morbidity raises awareness of the condition within the medical community, thereby aiding its identification. METHODS Case report of a patient treated at a university hospital in the interior of the ``Triângulo Mineiro`` region. RESULTS Female patient, 31 years old, previously healthy. She reported a fever for 3 weeks, associated with profuse sweating, chills, occipital headache, and irregular erythematous non-scaling, painless plaques on the trunk and limbs. Initially, a non-specific infectious condition was treated with antibiotics without clinical improvement. The condition recurred after 5 days, evolving with neuropathic pain on the posterior aspect of the right leg and dorsal region of the right foot, of intense severity, unresponsive to analgesics. The patient sought medical attention again in the outpatient service, and laboratory tests showed evidence of leukocytosis with a predominance of segmented and rod-shaped white blood cells. The patient was then referred for investigation at the University Hospital. During hospitalization, the condition fluctuated, with persistent fever spikes and previously reported pains. Infectious screening was conducted without alterations, including cerebrospinal fluid analysis. Imaging tests revealed left lung atelectasis and pleural effusion, along with signs of idiopathic intracranial hypertension on magnetic resonance imaging. A skin biopsy was performed, suggestive of normocomplementemic urticarial vasculitis. CONCLUSION