Changes

=== Introduction ===

=== Introduction ===

Pranavaha srotas is a vital system of the body and although this srotas is more susceptible to abuse from little amount of smoke, allergens, adulterants, petrochemicals and  many pollutants in atmospshere, there are a variety of disorders and diseases that are temporary and harmless, while others can be life threatening. In literature pranavaha srotas disorders are elaborated under the heading of shwaasa, kasa, hikka, rajayakshma and urakshata (kshata-kshina).  Cough, expectoration, breathlessness, sore throat, chest pain are common clinical features of respiratory diseases. Kasa is one such disease, which is identified by the hoarse phonetic sound, produced due to the pathological process of doshadushti (vitiation of dosha), vimarga gamana (diverted movement) of pranavata and avarana (occlusions) of vayu by the kapha. The main pathology is in chest region with reduced functioning of the respiratory system.  

Pranavaha srotas is a vital system of the body and although this srotas is more susceptible to abuse from little amount of smoke, allergens, adulterants, petrochemicals and  many pollutants in atmospshere, there are a variety of disorders and diseases that are temporary and harmless, while others can be life threatening. In literature pranavaha srotas disorders are elaborated under the heading of shwaasa, kasa, hikka, rajayakshma and urakshata (kshata-kshina).  Cough, expectoration, breathlessness, sore throat, chest pain are common clinical features of respiratory diseases. Kasa is one such disease, which is identified by the hoarse phonetic sound, produced due to the pathological process of doshadushti (vitiation of dosha), vimarga gamana (diverted movement) of pranavata and avarana (occlusions) of vayu by the kapha. The main pathology is in chest region with reduced functioning of the respiratory system.  

Smoke, dust, and over exertion (dhumopaghata, raja, vyayama) are largely considered as causative factors (samanya nidana).  These may cause direct damage to the harmony of the pranavaha srotas which occurs in all respiratory disorders. Apart from above said causative factors some in particular like guru (heavy), snigdha (unctuous), madhura (sweet), asatmya (unhabituated), paryushita ahara (rotten food) will cause vitiation of dosha, more specifically vata and kapha which will in turn have its impact on pranavaha srotas to cause structural and functional impairments (kha vaigunya). Improper diet will result in the improper digestion and absorption of ahara rasa which will in turn produce kasa. These can be considered as intrinsic factors for the pathogenesis.  

Smoke, dust, and over exertion (dhumopaghata, raja, vyayama) are largely considered as causative factors (samanya nidana).  These may cause direct damage to the harmony of the pranavaha srotas which occurs in all respiratory disorders. Apart from above said causative factors some in particular like guru (heavy), snigdha (unctuous), madhura (sweet), asatmya (unhabituated), paryushita ahara (rotten food) will cause vitiation of dosha, more specifically vata and kapha which will in turn have its impact on pranavaha srotas to cause structural and functional impairments (kha vaigunya). Improper diet will result in the improper digestion and absorption of ahara rasa which will in turn produce kasa. These can be considered as intrinsic factors for the pathogenesis.