神经性厌食

定义

神经性厌食症的特点是与个人身高、年龄和发育阶段相比，体重明显偏低，不是由于其他健康状况或无法获得食物所致。常用阈值是成人的体重指数（BMI）低于18.5kg/m²，儿童和青少年的BMI-年龄低于第五百分位。只要符合其他诊断要求，快速减重（如6个月内超过总体重的20%）可以取代低体重的准则。儿童和青少年可能表现出未能按照预期的个人发展轨迹增加体重，而不是体重下降。低体重伴随着持续的行为模式，以防止恢复正常体重，这可能包括旨在减少能量摄入的行为（限制饮食），清除行为（如自我诱导呕吐，滥用泻药），以及旨在增加能量消耗的行为（如过度运动），通常与担心体重增加有关。低体重或体形是该人自我评价的核心，或被不准确地认为是正常的，甚至是过度的。

Anorexia Nervosa is characterised by significantly low body weight for the individual’s height, age and developmental stage that is not due to another health condition or to the unavailability of food. A commonly used threshold is body mass index (BMI) less than 18.5 kg/m² in adults and BMI-for-age under 5th percentile in children and adolescents. Rapid weight loss (e.g. more than 20% of total body weight within 6 months) may replace the low body weight guideline as long as other diagnostic requirements are met. Children and adolescents may exhibit failure to gain weight as expected based on the individual developmental trajectory rather than weight loss. Low body weight is accompanied by a persistent pattern of behaviours to prevent restoration of normal weight, which may include behaviours aimed at reducing energy intake (restricted eating), purging behaviours (e.g. self-induced vomiting, misuse of laxatives), and behaviours aimed at increasing energy expenditure (e.g. excessive exercise), typically associated with a fear of weight gain. Low body weight or shape is central to the person's self-evaluation or is inaccurately perceived to be normal or even excessive.

除外词 明确排除、需编到其他条目的情况

• 纳差MG43.7

子条目 共 5 条

• 6B80.0神经性厌食伴显著低体重3
• 6B80.1神经性厌食伴危险低体重3
• 6B80.2神经性厌食恢复期伴正常体重
• 6B80.Y其他特指的神经性厌食
• 6B80.Z未特指的神经性厌食