viewpoints

ELIMINATING ITCHY INSECT IRRITATIONS

Gamma Benzene Hexachloride Is Effective, But Must be Used With CareGamma benzene hexachloride , commonly known as lindane, is very effective for treating scabies and lice, according to MedicalLeifer consultants, who believe that 'it is reasonably safe if use is limitedto J or 2 exposures.' It is available by prescription as aI % cream, lotion or shampoo (Kwell', Reed & Carnrick, 'Kwellada' in Canada; 'Gamene', Barnes-Hind); and withoutprescription as 'R & C Spray' (Reed & Carnrick) for bedding , clothing and furniture, which, they comment, 'is unnecessary andpotentiallydangerous; physiciansshouldwarn their patients not to use it .'Gammabenzene hexachloride can be absorbed from the skin into the blood. Convulsions have been reported in children aftertopical application (usually excessiveand prolonged), and in at least I case after accidental ingestion from the skin, and blooddyscrasias have occurred in people exposed to it as an insecticide spray or after treating pets.

What are the ,alternat ives?Sulphur in petrolatum is a safe, effective alternative, probably preferable for infants and young children, but its odour and stainingare unpleasant. 10% crotamiton ('Eurax', Geigy), benzyl benzoate ('Scabanca'; Canada), and for pediculosis, topical copper oleate('Cuprex', Calgon-Merck) and pyrethrins with piperonyl butoxide ('RID') have not been compared with gamma benzenehexachloride, and safelimits for their use are not well established.

Medical Letter 19: 18(25.Feb 1977)

INPHARMA 12th March. 1977 p2