In the present world there is a prevalence of various diseases as the people are not so aware about their health and dietary habits. The diseases more often affect the health of population due to the resistance to various organisms and viruses, causing the disease. In spite of a balanced diet, daily exercises and yoga practices, the people are more prone to develop the diseases. The main reason behind this may be the lack of ojas (immunity) due to various factors i.e. mental and physical stress in this modern world. Acharyas, in past also explained these factors for the loss of ojas. The ojas is the essence of all the seven dhatus (essential tissues), which provides the health when present in normal state. The ojas eventually present or circulate in whole body to fight against the foreign particles (virus and bacteria) to make the body free from disease. Not only the ojas protect against various physical diseases but also make keep check and wellness of mental health as a para ojas (specific immunity), which resides in the heart. Ojas implies a resistance against the loss of integrity, proportion and inter-relationship amongst the individual's doshas (physiological components of body) and dhatus. So clinically there is a great importance of ojas in the well-being of mental and physical health. In the short words the vyadikshamatva (acquired immunity) is maintained by the ojas in normal state and measurement in body to imply the resistance against the diseases (vyadhi) and provides the rapid recovery.
Shvitra (vitiligo) is an acquired de-pigmentation disorder manifested as white macules on the skin which causes significant psychological stress and social stigmatization. This disease is triggered by to the improper functioning of the melanocytes which are responsible for skin pigmentation. The correlation of vitiligo in Ayurveda is considered with shvitra. The three type of shvitra are mainly treated with different types of samshamna, lepa and samshodana karma like vamana, virechana etc. The reasons to develop this disease are also considered as the un-truthful, ungratefulness and disrespect the gods, sinful acts etc. These causative factors including oral as well as mental sinful disposition of this present life and previous life. So clinically this study requires some validation of various therapies like samshodhana, samshana, phototherapy etc. in shvitra as acharyas considered this disease in a karmaja category over the vitiligo, as modern science does not add any specific treatment like this as mentioned in Ayurvedic texts with special reference to vitiligo.
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