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Monday, January 24, 2011

SCORPION STING

Scorpion injects its venom in to human skin by a single puncture.In majority of the instances,manifestations are local and include paifull swelling and bleeding.As in the case of bee sting,these usually subside in some hours to a day or so.In others,
the scorpion may belong to a

noxious species that produces neurotoxin.The manifestation in such cases include severe local pain,Lymphadenitis,trismus,muscle spasms,convulsions and fever.Terminally, respiratory arrest

may prove fatal.

specific treatment is in the form of group specific antivenin in a dose of 10 to 30 ml (which is 2 to 3 times the adult dose).Unfortunately,it is not freely available.

General measures consist of prompt application of tourniquet and Ice-pack to slow the spread of the toxin,local infiltration of the area with 2% procaine to relieve pain,and sedation to allay anxiety.In addition,selective conseravative measures for specific organ system involvement and biochemical alterations and intensive care for circulatory failure and pulmonary complications are warranted.

Prognosis is generally good.Development of encephalopathy,coma,convulsions and arrhythmias carries unfavorable prognosis.

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