sometimes gives rise to a swelling at the place of contact with body; this condition is known as Sarpangabhihata. Bitten by any other animal (other than snake) during profound darkness, the person suspects it to be snake bite only and develops symptoms of poisoning,
Bite containing poison, has pricking pain, itching, swelling, pain, burning sensation and knotted (at the site); opposite of these are the features of the bitenot containing poison.
पूर्वे दर्वीकृतां वेगे दुष्टं श्यावीभवत्यसृक् । श्यावता तेन वक्त्रादौ सर्पन्तीव च कीटकाः ॥ १९ ॥
In the first stage of Darvikara visha, the vitiated blood becomes blue; because of that, there is blue color of the mouth etc. and the person feels as though insects are crawling on his body.
In the second stage, there is appearance of enlarged glands; in the third stage, feeling of heaviness of the head, obstruction of vision, moistness at the site of bite; in the fourth stage, there is expectoration, vomiting,