Illness (sometimes referred to as ill-health) can be defined as a state of poor health.

Introduction

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The mode of being healthy includes, as defined by the World Health Organization, " a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity" ([http://w3.whosea.org/aboutsearo/pdf/const.pdf WHO, 1946). When these condition are not fulfilled, then one can be considered to have an illness or be ill. Illnesses can be called a disease, and there are many kind of diseases like cancer, AIDS, etc. Some illnessess are curable but some are not. Medication and the science of pharmacology is used to cure or reduce symptoms of an illness or medical conditions. Developmental disability is a term used to describe severe, life-long disabilities attributable to mental and/or physical impairments.

Physical being

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Abnormal conditions of the body or mind that causes discomfort, dysfunction, or distress to the person afflicted or those in contact with the person can be deemed an illness. Sometimes the term is used broadly to include injuries, disabilities, syndromes, infections, symptoms, deviant behaviors, and atypical variations of structure and function, while in other contexts these may be considered distinguishable categories. A pathogen or infectious agent is a biological agent that causes disease or illness to its host. A passenger virus is a virus that simply hitchhikes in the body of a person or infects the body without causing symptoms, illness or disease. Foodborne illness or food poisoning is any illness resulting from the consumption of food contaminated with pathogenic bacteria, toxins, viruses, prions or parasites.

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RT @BetterHealthGov: #HEALTHTIPS to cope with heat stress and heat-related illnesses for #betterhealth this #summer http://t.co/9vNdYgB4
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