Doctor insights on:
Which Is More Potent Permethrin Or Pyrethrin
Lice and Scabies: Pyrethrin is used to treat lice, which are tiny insects that can infest and irritate the scalp (head lice), the pubic area (crabs), or the body. This medication works by paralyzing and killing lice. Permethrin is used to treat scabies ('mites that attach themselves to the skin) in adults and children 2 months of age and older. ...Read more
Depends on variables: This is basically a bug killer, like what is in your handy bug spray. Repeated applications to the skin, especially if the skin barrier is broken down by infection, infestation or burns could lead to the toxic material entering your blood. ...Read more
With care: Permethrin acts as a neurotoxin with greater effects on cold-blooded creatures like insects, fish, reptiles than warm- blooded. Overdoses can cause nausea, headaches, muscle weakness, excessive salivation and seizures. It has been classified by the epa as a likely human carcinogen. Thus, use sparingly and not around highly absorbable surfaces like any mucous membranes (nose, eyes, mouth). ...Read more
Permethrin: Is usually applied once and repeated in 1-2 weeks. Treatment of family members and decontamination of your home is very important so that repeated doses beyond the two above can be avoided. Although generally regarded as safe for short term use, repeated doses increases concern for toxicity (particularly in the very young or elderly) and can be very irritating to the skin. ...Read more
With a prescription: Emla (lidocaine and prilocaine) is a Lidocaine cream for local pain control -- it is only available with a prescription. ...Read more
1-2 weeks: Assuming you have successfully treated the scabies. It will likely take 1-2 weeks for the redness to subside. Topical steroids may help speed this process up. Make sure you wash all clothes, towels, sheets, and blankets following Permethrin treatment to make sure any residual mites are eradicated. ...Read more
New bumps after Rx: Scabies treatments often contain a high percentage of alcohol which can be very drying to the skin. New bumps should not develop unless they are from a hypersensitivity reaction or if the infestation was not completely cleared. An examination of skin scrapings can reveal the difference. ...Read more
Scabicides: Are available by prescription only, due to their toxicity. ...Read more
I used permethrin cream two nights ago and used it again tonight but didn't know I was suppose to wait a week so what do I do??
Second treatment: Suppose to be 1 week laterGet a more detailed answer ›
Using permethrin 5% lotion now & washing bed sheets, will they get infested again tonight? Do I have to wash them again tomorrow?
Yes, but: It may be unnecessary. If using it for scabies, it does usually kill the mites with the first application. However, the itching and irritation are caused by a body response to the debris left in the tunnels created by the mites. This irritation will take weeks to calm down after the mites are dead. ...Read more
1 oz: Apply to entire body from neck down and leave on overnight. Repeat in one week if necessary. Strip sheets and pillow case in morning and wash linens in hot water to kill mites. Also treat everyone else in house even they are symptomatic. Always check if dog or cat is source. ...Read more
Elimite (permethrin): Hello Vaidehibi. If you are taking Elimite (permethrin) for scabies, it starts to work with that one time application but may require a second application one week later. Also, it can take 2-3 weeks for the bumps and itching to resolve. Over the counter anti-itch creams used as directed can help in the mean time. Also important to eliminate sources of scabies in the home to prevent re-infection. Best wishes. ...Read more
Once: It is recommended that you wait 9-10 days before repeating it. There is resistance to the medication now and therefore it may not be effective. Also itching may continue if you have scabies infection even though the mite has been killed. You should see your doctor to see if another medicine needs to be prescribed. ...Read more
Difficult question: Permethrin is only minimally absorbed into the bloodstream (less than 2%) after topical application, but it is a VERY stable compound with a long half life. The amount absorbed is considered below the toxic level, but it will remain for quite some time (this is based on a study on rats, I could not find human studies). Hope this helps. ...Read more
Scabies killed: Scabies treatments often contain a high percentage of alcohol which can be very drying to the skin. Rash and itching can persist for two weeks, but all mites should be dead (new bumps shouldn't develop unless reinfected or treatment not completed). Evaluation with a skin scraping can determine treatment success ...Read more
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