Possible overuse, improper use, insufficient contact time Counseling is of extreme importance! Lice Treatment – Synergized Pyrethrins Approved to treat head lice and pubic lice Mechanism of Action on lice: Block nerve impulse transmission → paralysis → death To reduce skin absorption, avoid excessive contact time and occlusion of scalp Concentrations: 0.17% - 0.33% Generally in combo with 2% - 4% piperonyl butoxide Considered efective when applied as shampoo, foam, solution, gel Directions for use of shampoo (foam) Apply to dry hair/scalp, sufficient quantity to wet the hair Leave on for 10 minutes Work shampoo into a lather, then rinse thoroughly (Rinse foams with shampoo or soap and water) Use a nit comb to remove dead lice and eggs Repeat treatment in 7-10 days Kill any remaining nits that have hatched since 1 st treatment Max application: twice in 24 hours Avoid contact with eyes, mucous membranes Lice Treatment – Permethrin Synthetic pyrethroid Permethrin indicated for head lice only Causes paralysis of lice → death Concentration available: 1% Available as nonprescription cream rinse < 2% absorbed when applied topically Directions for use Wash hair/scalp with regular shampoo, towel dry hair Apply sufficient quantity of cream rinse to cover/saturate hair Leave on for 10 minutes, then rinse and towel dry Use a nit comb to remove dead lice and eggs Avoid contact with eyes, mucous membranes Residual efects for up to 10 days Only need to retreat in 7-10 days if active lice are detected Avoid if sensitive to pyrethrins or chrysanthemums Do not use on infants < 2 months Lice Treatment Product Comparison (permethrin vs pyrethrin) If single applicationpermethrin If two applicationsno significant diference Age restrictions Pyrethrin → 2 years and older Permethrin → 2 months and older Pubic area → pyrethrin Scalp → pyrethrin or permethrin Reevaluate after 2nd treatment If symptoms resolved, D/C treatment – If symptoms still present → REFER Lice Treatment Product Examples Pyrethrins 0.33% and Piperonyl butoxide 4% (“synergized”) RID Lice Killing Shampoo, Maximum Strength – RID Mousse Foam, Maximum Strength Pronto Lice Killing Shampoo A-200 Lice Killing Shampoo Pyrethrins 0.33%, piperonyl butoxide 3% Nix Cream Rinse Lice Treatment Permethrin 1% Complementary Lice Treatment Lice Enzyme Shampoos Claim to break down lice exoskeleton, promoted as alternative to pediculicides 10% Tea Tree Oil and 1% Lavender Oil Applied weekly x 3 weeks was more efective than synergized pyrethrin at eradicating lice Other oil-based products: petroleum jelly, mayonnaise Not very efective, likely only slow movement of lice Gasoline, kerosene = ALWAYS AVOID Flammability, potential for toxicity Emerging Lice Treatment DSP (Dry-on, Sufocation-based Pediculicide) Lotion
You've reached the end of your free preview.
Want to read all 10 pages?
- Fall '08
- Head louse, Pediculosis, DEET, Body louse, insect bites, permethrin