Criteriona | Definition | |
---|---|---|
1 | Weight loss ≥ 4 kg | Loss of 4 kg or more of body weight since illness began, not due to dieting or other factors |
2 | Livedo reticularis | Mottler reticular pattern over the skin of portions of the extremities or torso |
3 | Testicular pain or tenderness | Pain or tenderness of the testicles, not due to infection, trauma, or other causes |
4 | Myalgias, weakness or leg tenderness | Diffuse myalgias (excluding shoulder and hip girdle) or weakness of muscles or tenderness of leg muscles |
5 | Mononeuropathy or polyneuropathy | Development of mononeuropathy, multiple mononeuropathies, or polyneuropathy |
6 | Diastolic BP > 90 mmHg | Development of hypertension with the diastolic BP higher than 90 mmHg |
7 | Elevated BUN or creatinine | Elevation of BUN > 40 mg/dL or creatinine > 1.5 mg/dL, not due to dehydration or obstruction |
8 | Hepatitis B Virus | Presence of hepatitis B surface antigen or antibody in serum |
9 | Arteriographic abnormality | Arteriogram showing aneurysms or occlusions of the visceral arteries, not due to arteriosclerosis, fibromuscular dysplasia, or other non-inflammatory causes |
10 | Biopsy of small or medium-sized artery containing PMN | Histologic changes showing the presence of granulocytes or granulocytes and mononuclear leukocytes in the artery wall |