Indications
Pharmacology
Permethrin cream contains Permethrin, a pyrethroid, which is a topical scabicidal agent for the treatment of infestation with Sarcoptes Scabiei (scabies). It acts on the nerve cell membrane to disrupt the sodium channel current by which the polarization of the membrane is regulated. Delayed repolarization & paralysis of the pests are the consequences of this disturbance.
Pharmacokinetics: The only approved route of administration is the topical route and there are few human data available on systemic exposure or kinetics following permethrin application to the skin. Some presystemic metabolism occurs in skin. Less than 0.5% of applied permethrin is absorbed during the first 48 hours. Absorbed permethrin is rapidly metabolized by ester hydrolysis, most likely in the liver and the products are excreted primarily in the urine.
Dosage
Recommended duration of Treatment:
- Adults and children over 12 years: a full tube
- Children aged 6-12 years: up to 1⁄2 of a tube
- Children aged 1-5 years: up to ¼ of a tube
- Children aged 2 months to 1 year: up to ⅛ of a tube
- Children Less then 2 month: dose is not established
Administration
Before application of Permethrin cream the skin should be clean, cool and dry. Do not have a hot shower or bath before applying.
For adults and children over 2 years: Apply the cream to the whole body from the neck down, rubbing lightly into the skin until the cream disappears. It is important to include all skin surfaces, such as between the fingers and toes, under the nails and on the soles of the feet.
For babies under 2 years: Apply to the face, neck, ears and scalp as well, only avoiding the area immediately around the eyes and mouth.
Leave cream on for at least 8 hours, before washing off. Reapply to any area that may be washed during the 8h treatment time (such as after washing the hands). If necessary, permethrin cream should be used again after 7 days as per the advice of the doctor.