Scorpion sting.

Acute life threatening systemic involvement (cardiovascular and central nervous system) occur due to scorpion poisoning, often reported from rural part of world comprises the majority of developing countries. The most serious symptoms are hypertension, impaired left ventricular systolic function, hypotension and pulmonary oedema. Scorpion antivenin neutralizes circulatory and tissue venin. It has no action on effective effectors (Receptors). Prazosin possesses pharmacological properties that render it most suitable in antagonizing the toxicological effects of scorpion venom.