The concept of disease and type of agent for disease. D pharmacy question answer

Hii frnds i'm Prem singh  first year D pharmacy student of Onkaar college of pharmacy Sangrur Punjab, and preparing for neet 2022. Recently I started blogging to help the d pharmacy students. 

In my blog I'm providing Important question answer and PDF notes, coz I know now a days everybody do not want to amke notes. They want written PDF notes. 

 

 In this post I'm gonna post Concept of disease and type of agent. 

Define the term community pharmacy


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Health and it's dimension

Concept of disease :  The concept is that disease occur due to multiple factor Ex -agent, host, and environment. These three factor form the epidemiological tried. 


Disease agent: The frist link in the chain of disease transmission is the disease agent. The disease agent is defined as a 'living or non living  substance or the excessive presence or absence of a force which may initate Or perpetuate a disease process '. 


Disease agent may be broadly classified as : 

1. Biological agents

2. Nutrient agents  

3. Physical agents

4. Chemical agents

5. Mechanical agents

6. Social agents 

7. Absence or excess of health factor 


1. Biological agents :  They are living organisms such as bacteria, virus, protozoa and fungai. 

2.Nutrient agents: They are proteins, fats, carbohydrates, vitamins and minerals. Any excess or deficiency of these nutrient can result in diseases. 

2. Physical agents: They are exposure to heat, cold, pressure, electricity, radiation, etc. 

3. Chemical agents: They may be 

a) exogenous (present outside) such as fumes, dusts, mentals, gases, etc. 

b) endogenous (produced in the body) such as urea, uric acid, ketone etc. 

4. Mechanical agents: Various mechanical forces may result in injuries (like crushing, tearing, sprains) and even in death. 

6.Social agents : They are poverty, smoking, alcohol, drug abuse, unhealthy life-styles, social isolation etc. 

7.Absence or excess of health factors: Excess or lack of happiness, nutrient etc. Can lead to a variety of disease. 


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