symptom
症状
A change experienced and reported by the person.

HEALTH ENCYCLOPEDIA
Clarify a concept and explore its place in the science of life and health.
200 bilingual foundational entries, connected to the curriculum.
症状
A change experienced and reported by the person.
社会参与
Involvement in life situations such as work, family, and community activities.
细胞分化
The development of cellular structures and activities suited to particular functions.
细胞外基质
Extracellular fibers, other molecules, and associated water that contribute to tissue organization and the cellular environment.
反应耦联
Linking an energetically favorable process to one that requires an energy input.
电化学梯度
The combined chemical and electrical influence on the movement of an ion.
基因表达
The use of genetic information to make products such as RNA or protein.
外显率
The proportion of people carrying a variant who show the associated features, interpreted in context such as age.
稳态
Dynamic regulation that maintains internal conditions within workable ranges.
负反馈
A response that reduces or opposes the deviation that triggered it.
微生物群
The community of microorganisms living in a particular environment.
定殖
Persistence and growth of microorganisms at a site without necessarily causing disease.
混杂
The influence of other factors becomes mixed with the exposure–outcome relationship, complicating causal interpretation.
反向因果
The presumed outcome influences the behavior or exposure being studied.
绝对风险
The probability of an event in a defined population over a stated period.
绝对风险差
The difference between two comparable risks, expressed in percentage points when subtracting percentages.
解剖学姿势
A standard reference posture: upright, facing forward, arms at the sides, and palms facing forward.
纵隔
The central region of the thorax between the lungs, containing the heart and other structures.
心房
A chamber receiving returning blood.
心室
A chamber pumping blood into an artery.
灌注
Passage of blood through tissue.
阻力
Opposition to flow for a given pressure difference.
血浆
The liquid component of unclotted blood.
血红蛋白
The red-cell protein that binds oxygen reversibly.
通气
Bulk movement of air into and out of the lungs.
潮气量
Air volume moved in a normal breath.
消化
Mechanical processing and chemical breakdown of food.
吸收
Movement across intestinal epithelium into the internal environment.
门静脉
A vein delivering blood from digestive and related organs to the liver.
肝细胞
A cell performing most hepatic metabolic and synthetic functions.
肾单位
The basic functional structure for filtration and tubular processing.
滤过
Movement of water and selected solutes from plasma into the glomerular capsule.
传入
Information travelling toward the central nervous system.
传出
Commands travelling from the central system toward effectors.
激素
A secreted chemical signal influencing target-cell activity.
受体
A molecular structure recognising a signal and initiating a response.
抗原
A structure recognised by adaptive immune receptors.
先天免疫
Defence using barriers and pre-existing recognition mechanisms.
重塑
Coordinated renewal through bone resorption and formation.
肌节
A repeated basic contractile unit in a myofibril.
表皮
The outer epithelial layer of skin.
真皮
The skin layer containing connective tissue, vessels and nerves.
效应器
A tissue or organ executing a regulatory response.
感觉
Detection and transduction of stimuli by sensory systems.
知觉
Organisation and interpretation of sensory information.
编码
Processing information into representations for later use.
工作记忆
A system temporarily maintaining and manipulating information.
认知评估
Evaluation of an event in relation to goals and coping resources.
唤醒
The level of physiological and psychological activation.
压力源
A condition presenting threat, challenge or adaptation demands.
HPA轴
The hormonal regulatory chain linking hypothalamus, pituitary and adrenal cortex.
动机
Processes initiating, sustaining and directing behaviour.
强化
A process in which a consequence makes the preceding behaviour more likely to occur again.
依恋
A lasting emotional bond with a caregiver or other important person.
安全基地
Security from a dependable relationship that supports comfort-seeking and exploration.
焦虑
Worry about possible threat and associated mental and bodily responses.
功能影响
The effect of symptoms on activities such as learning, work and relationships.
兴趣或愉悦减退
Reduced interest or enjoyment in previously valued activities.
抑郁发作
A period assessed through persistent depressive symptoms and effects on functioning.
渴求
A strong desire to use a substance or engage in a behavior.
功能损害
Limitations in everyday activity or participation.
营养素
A food component used for energy, structure, or regulation.
必需营养素
A nutrient required from suitable external sources.
单糖
A sugar consisting of a single basic unit.
糖原
A branched polymer used to store glucose.
甘油三酯
An energy-storage lipid containing glycerol and three fatty acids.
磷脂
A membrane lipid with hydrophilic and hydrophobic regions.
肽键
A chemical bond connecting amino acids.
变性
A change in protein spatial structure.
微量营养素
A nutrient required in small amounts for normal function.
电解质
A substance forming charged ions in body fluids.
静息代谢
Energy expenditure supporting basic functions at rest.
饱餐作用
Processes contributing to termination of a meal.
膳食模式
The recurring combination of foods, amounts, and frequencies.
实际份量
The amount selected or eaten on one occasion.
巴氏杀菌
A controlled time-temperature treatment reducing foodborne pathogen risk.
均质
Processing that disperses particles to improve physical uniformity.
交叉污染
Transfer of a hazard among foods, equipment, or surfaces.
潜伏期
Time between exposure and symptom onset.
盲法
Concealing allocation to reduce bias from expectations or assessment.
ATP周转
The continuous use and resynthesis of ATP.
磷酸肌酸
A reserve that rapidly transfers phosphate to ADP to regenerate ATP.
心输出量
Blood pumped by one ventricle per minute, equal to heart rate times stroke volume.
每搏输出量
Blood ejected by one ventricle with each beat.
运动单位
A motor neuron and all the muscle fibers it supplies.
离心收缩
A muscle action producing tension while the muscle lengthens.
骨重建
Replacement of old bone through coordinated resorption and formation.
机械转导
Conversion of mechanical input into a biological response.
支撑面
The contact areas supporting the body and the area between them.
重心
The combined position of the body mass distribution.
频率
Number of activity sessions in a period.
相对强度
Activity demand relative to current individual capacity.
疲劳
Reduced task capacity or increased perceived effort.
韧带
Connective tissue that mainly joins bone to bone.
扭伤
An injury involving a ligament.
睡眠结构
The organization of stages and transitions across a night.
慢波睡眠
The non-REM stage characterized by prominent slow waves.
内源节律
A recurring pattern generated internally.
同步
Establishment of a stable relationship with an external cycle.
巩固
Stabilization and reorganization following learning.
失眠
Sleep difficulty despite opportunity, with distress or functional consequences.
刺激控制
Modification of cues and behaviours linking bed with wakefulness.
阻塞性睡眠呼吸暂停
Recurrent sleep-related upper-airway obstruction affecting ventilation.
中枢性呼吸暂停
An event involving temporarily insufficient respiratory drive or effort.
昼夜错位
Mismatch between internal timing and external schedules.
相位提前
A shift of rhythmic timing to an earlier hour.
精液
Fluid containing sperm and accessory-gland secretions.
外阴
External genital structures including labia and clitoris.
卵泡期
The preovulatory phase of follicular development.
黄体
A temporary hormone-secreting structure formed after ovulation.
携带者
Someone carrying a recessive variant, usually without the associated disorder.
孕周
Pregnancy age usually dated from the first day of the last menstrual period.
着床
Establishment of the early embryo within the uterine lining.
产程
Stages covering cervical change, birth, and placental delivery.
子宫复旧
Postpartum reduction and recovery of the uterus.
肺血管阻力
Resistance to blood flow through pulmonary vessels.
功能性闭合
Loss of major flow through a pathway before permanent anatomical closure.
回应式喂养
Feeding that notices and responds to hunger and fullness cues.
辅食
Foods introduced alongside milk to meet additional nutritional needs.
生长轨迹
The pattern of body measurements over time.
百分位
Relative position within a reference distribution.
气质
Individual patterns of activity, reactivity, and adaptation.
共同调节
Adult support for a child’s emotional and behavioural regulation.
促性腺激素释放激素
A hypothalamic signal regulating pituitary gonadotropins.
第二性征
Pubertal features such as breast development, body hair, and voice change.
肥大
An increase in cell size.
病原体
An infectious agent capable of causing infection under relevant conditions.
定植
Presence or growth of organisms without corresponding clinical infection.
炎症
Vascular and cellular responses to injury or danger signals.
血管通透性
The degree to which substances can pass through a vessel wall.
内皮
The vessel-lining cell layer involved in vascular and clotting regulation.
泡沫细胞
A lipid-laden cell, often a macrophage, within a lesion.
胰岛素
A hormone coordinating glucose use, storage, and liver output.
胰岛素抵抗
Reduced tissue responsiveness to insulin.
侵袭
Extension of malignant cells into neighboring tissue.
转移
Cancer spread establishing disease away from its primary site.
免疫耐受
Regulation limiting inappropriate responses to self or selected harmless components.
致敏
Development of detectable specific immune recognition.
伤害性感受
Neural encoding of noxious stimuli.
神经病理性疼痛
Pain caused by disease or lesion of the somatosensory system.
多病共存
Two or more long-term health conditions in one person.
治疗负担
Time, cost, and capacity demands imposed by care.
鉴别诊断
Evidence-based comparison of plausible causes.
检前概率
Estimated disease probability before a new test result.
参考范围
An interval based on measurements in a specified reference population.
敏感度
Proportion of truly affected people who test positive.
筛查
Identifying people without relevant symptoms who may need further assessment.
提前量偏倚
Earlier diagnosis lengthens recorded survival without necessarily postponing death.
药效学
Study of what a medicine does to the body.
药代动力学
Study of drug absorption, distribution, metabolism, and excretion.
临床结局
A measure directly reflecting symptoms, function, survival, or another clinical result.
替代终点
An indicator used in place of a clinical outcome with context-specific supporting evidence.
主要诉求
The problem or concern the person most wants the visit to address.
症状时间线
A chronological account of symptoms, changes, associated events, and responses.
康复
Interventions addressing the body, tasks, and environment to optimize function and participation.
神经可塑性
Capacity of the nervous system to change organization and function with experience, learning, or injury.
脱矿
Loss of minerals from the tooth surface under acidic conditions.
牙周组织
Gums, ligament, and related tissues that surround and support teeth.
濒死喘息
Ineffective irregular gasps that can occur during cardiac arrest.
恢复体位
A side-lying airway-protecting position for an unresponsive person breathing normally.
心搏骤停
An emergency loss of effective cardiac circulation.
胸廓回弹
Return of the chest after each compression.
有效咳嗽
A forceful cough with continuing ability to breathe.
严重气道梗阻
Severely restricted airflow with ineffective coughing or inability to vocalize.
心理危机
Distress or behavioral change threatening safety or everyday coping and requiring timely support.
自杀意念
Thoughts of ending your life; intent to act needs further assessment.
健康差异
A measurable health difference between population groups.
健康不公平
A health difference judged unfair, avoidable, or remediable.
患病率
Proportion with a target condition at a specified point or during a period.
发病风险
Proportion of an initially at-risk population developing a new outcome over a specified period.
免疫记忆
Persistence of capacity for a faster specific response after an initial encounter.
危害
The potential of an agent to cause harm.
暴露
Contact with an agent through a specified route and period.
职业暴露
Contact with health-relevant agents or conditions during work.
工程控制
Design of equipment or environments to prevent hazardous contact.
城市热岛
Higher urban temperatures associated with heat storage and other built-environment effects.
适应
Adjustment of systems to reduce current or expected climate impacts.
围绝经期
The transition around menopause involving menstrual and hormonal changes.
绝经
Permanent cessation of menstruation following loss of ovarian follicular function.
细胞衰老
A state of relatively stable cell-cycle arrest with continuing metabolic activity.
蛋白质稳态
Processes balancing protein production, folding, repair, and removal.
衰弱
Reduced multisystem reserve associated with greater vulnerability to stressors.
肌少症
A muscle disorder involving reduced strength and abnormal muscle quantity or quality.
执行功能
Cognitive abilities for planning, organizing, switching tasks, and regulating actions.
轻度认知障碍
Cognitive decline beyond expectation with everyday independence largely preserved.
日常生活活动
Basic self-care tasks such as eating, dressing, bathing, toileting, and transferring.
工具性日常活动
More complex tasks supporting independent life, such as shopping, medicines, and transport.
舒缓医疗
Care improving quality of life through assessment and relief of suffering associated with serious illness.
预后
An estimate of likely disease course and outcomes, usually with uncertainty.
健康的社会决定因素
Living conditions and the wider social forces that shape opportunities for health.
组织
An organized arrangement of cells and associated material that contributes to particular functions.
表观遗传
The study of regulatory changes affecting gene activity without altering the DNA base sequence.
代偿
Changes in other processes that help maintain a function under strain.
菌株
A subgroup within a microbial species with particular genetic and functional characteristics.
阳性预测值
The proportion of positive test results that are true positives; it depends in part on disease prevalence in the tested population.
管腔
The inside space of a tubular structure, such as the intestinal space through which food passes.
二尖瓣
The valve between the left atrium and ventricle.
每搏量
The volume ejected by one ventricle per beat.
心肌
The muscle tissue of the heart wall.
静水压
Pressure exerted by fluid on surrounding surfaces.
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