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| Disease is a changed,deviated,variated and disturbed conditions in normal character of health either inside or outsideof the body.It is reconised by its causes,symptoms and diagnosis.It is cured with the help of therapeutics. |
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| (A) Causes |
It means reasons of a disease.Its factors are studied and is known as Etiology.
Etiology-It is study of causes of a disease.There are several causes as below- |
1. External injuries e.g. cut,abrasion,sprain etc.
2. Cold,heat,chemical etc.
3. Infection of bacteria,virus,fungus,parasites and other insects.
4. Unhygienic conditions,irregular feeding,unbalanced feed,deficiency of minerals and vitamins.
5. Poison.
6. Hypo and hyper function of endocrine glands,metobolic disturbanes etc. |
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| (B) Symptom |
| It is the disturbance in the body which attracts the attention of the patient.It is nothing but appriciable manifestation of a disease.There are various symptom in a disease which can be seen in connection with the general health of the animal either outside or inside of the body.These are briefly described below- |
1. Symptom of appearance.
2. Symptom of body condition.
3. Symptom of changes or peculiarity in habit and nature.
4. Symptom of posture.
5. Symptom of body temptature.
6. Symptom of changes in visible mucous membrane.
7. Symptom of alimentary system.
8. Symptom of respiratory system.
9. Symptom of vascular system.
10. Symptom of urinary system.
11. Symptom of nervous system.
12. Symptom of skin. |
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| (C) Classification of disease |
1. External injuries
2. General Diseases or Non-infectious
3. Infectious and Contagious Diseases
4. Parasitic and Fungal Diseases
5. Skin Diseases
6. Poisioning Diseases |
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