why do we fall ill extra questions

What do you understand by symptoms? Answer: Apparent signs which give a clue about an underlying disease are called symptoms. For example; headache, fever, abdominal cramps, etc. What is an acute disease? Answer: A disease which appears for a short duration is called acute disease. In most of the cases, an acute disease does not result in debility. Example: cholera, diarrhea, flu, common cold, etc. What do you understand by non-infectious disease?


Answer: When a disease happens because of some malfunctioning in any organ and it is not because of any microorganism, it is called non-infectious disease. A non-infectious disease may happen because of a wrong lifestyle. Some non-infectious diseases may happen because of genetic factor, i. e. they are right from the birth. Example: diabetes, hypertension, heart disease, arthritis, hemophilia, etc.
1. БHealthБ is a state of being well enough to function well physically, mentally, and socially. 2.


БDiseaseБ ( disturbed ease) means being uncomfortable. One or more systems of the body will change, give rise to БSymptomsБ ( Cough, loose motions, pus formation, headache, fever, breathlessness, vomiting, fits, unconsciousness, inflammation, swelling and general effects - a Doctor look for the basis of symptoms). Diseases are basically two types- Acute Disease & Chronic Disease 3.


Acute Disease: The disease which lasts for only a short period of time is called Acute Disease Ex. Common Cold. 4. Chronic Disease: The disease which lasts for long period of time is called Chronic Disease Ex. Tuberculosis. 5. Causes of Diseases : Most of the diseases have many causes, rather than one single cause, like unclean water, nourishment, genetic differences, genetic abnormalities e. g.


Based on the causes diseases are of two types: Non-Infectious Diseases and Infectious Diseases. 6. Non-Infectious Diseases: Not caused by infectious agents, mostly internal and non- infectious cause. Ex. Cancer 7. Infectious Diseases: Caused by infectious agents. (Please refer Fig. 13. 1 (a-e), NCERT Text Book Page- 181). a)The infectious diseases spread by agents are called as Communicable Diseases.

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