Diseases and their Causes According to Ayurveda

The harmony and the balance of the Doshas, Dhatus, Malas and Agni in the body is the primary condition of the health. The equilibrium is maintained through a life in conformity with the laws of nature.
A wrong behavior and food habit disturbs the harmony and lead to diseases.
The vitiated Doshas are the prime causative factor for a disease. Because they are the only causative factors for the vitiation (derangement) of other body elements like Dhatus, Malas, Agni etc. Both under pathological and healthy conditions, the Doshas behave in different patterns and elicit various signs and symptoms in regard to their vitiation, direction of spreading area of localization and manifestation.
The Doshas can be vitiated mainly by two ways normally and abnormally. The normal vitiation is produced by the inevitable and natural factors like seasonal variations, diurnal variations, various stages of digestion. This type of vitiation is easy to treat and often it does not require any treatment as the condition subside automatically. Abnormal vitiation of Doshas is caused by deliberate exposure to specific etiological factors, both external and internal. That is abuse of functions of sense organs, wrong bodily habits, suppression of body urges, ill food habits, avoidance of seasonal and daily regimes. Incompatible combination of food, lack of body care and preservation of health, constant exposure of mind to bad feelings like greed, jealousy, anger etc.
Having a through knowledge of the signs and symptoms produced by the vitiated Doshas and Dhtus, and through careful examination one can know causative factors of a disease.
This very much helpful in aspect of treatment. The basic principles of treatment in Ayurveda is to eliminate the internal disease causing factors of disease, also to bring back the vitiated Doshas, Dhatus, Malas and Agni to normal functioning state.