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Permethrin is a medication and an insecticide. [6] [7] As a medication, it is used to treat scabies and lice. [8] It is applied to the skin as a cream or lotion. [6] As an insecticide, it can be sprayed onto outer clothing or mosquito nets to kill the insects that touch them. [7] [9] Side effects include rash and irritation where it is applied. [8]
Chemical structure of Allethrin isomers Chemical structure of Permethrin isomers. A pyrethroid is an organic compound similar to the natural pyrethrins, which are produced by the flowers of pyrethrums (Chrysanthemum cinerariaefolium and C. coccineum). Pyrethroids are used as commercial and household insecticides. [1]
First line treatment usually contains permethrin and is available over the counter. [3] Two rounds of treatment at least a week apart are usually required to kill newly hatched nymphs. [5] Washing bedding and clothing in hot water kills the lice, and transmission can be prevented by avoiding sexual contact until no signs of infestation exist.
Resistance of head lice to insecticides such as lindane, malathion, phenothrin and permethrin has been reported. [9] [10] [11] A 2021 systematic review and meta-analysis found that the mean frequency of pyrethroid resistance of lice was 77% globally, and even 100% in several countries (Australia, England, Israel, and Turkey). [12]
Insecticides are pesticides used to kill insects. [1] They include ovicides and larvicides used against insect eggs and larvae, respectively. The major use of insecticides is in agriculture, but they are also used in home and garden settings, industrial buildings, for vector control, and control of insect parasites of animals and humans.
RSV vaccine side effects in older adults . The CDC lists the following as possible side effects of the RSV vaccine: Pain, redness, and swelling where the shot is given. Fatigue. Fever. Headache ...
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