旱山院 世界卫生组织把严重偏头痛与四肢瘫痪、精神障碍、 痴呆并列为最严重的慢性功能障碍性疾病。 Table 1. I Revised disability classes: Indicator condit ions and severity weights Class Indicator conditions Weight 1 vitiligo on face, weight-for-height less than 2 SDs 0.00-0.02 2 watery diarrhoea, severe sore throat, severe anaemia 0.02-0.12 3 radius fracture in a stiff case. infertility. erectile dysfunction, rheumatoid 0.120.24 arthritis. angina 4 below-the- knee-amputation, deafness 0.240.36 5 rectovaginal fistula, mild mental retardation, Down syndrome 0.36-0.50 6 major depression, blindness, parapl 0.50-0.70 7 active psychosis. dementia. severe migraine. quadriplegia 0.70-1.005 世界卫生组织把严重偏头痛与四肢瘫痪、精神障碍、 痴呆并列为最严重的慢性功能障碍性疾病