The ACR nomenclature for CNS lupus revisited.

• Neuropsychiatric systemic lupus erythematosus (NPSLE) involves a wide range of peripheral and central nervous system manifestations. These manifestations are complex and their pathophysiology is poorly understood. NPSLE can precede the onset of lupus or occur at any time during its course. The American College of Rheumatology (ACR) developed a standardized nomenclature system providing case definitions for the neuropsychiatricsyndromes of systemic lupus erythematosus(SLE) to facilitate and enhance patient classification and reporting requirements in clinical research. Estimates of NPSLE prevalencehave ranged widely and most are based on research conducted before the introduction of ACR case definitions. This paper reviews the early experience with the ACR nomenclature use and possible future directions for its improvement. The identification and categorization of the major neuropsychiatricsyndromes in SLE using ACR case definitions seems to be adequate, however the mildest and most subjective of the syndromes are the most problematic. Even if the definitions in their present form might have drawbacks the only way forward is further use of ACR nomenclature, pooling data from different populations, and collection of experienceas a basis for improvement. The acquisitionof normative data for ethnic, age and sex stratification would extend their usefulness.

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MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Reumatologi och inflammation (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Rheumatology and Autoimmunity (hsv//eng)

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