Scant Proof That Insect Bite Cures Work

A UK assessment within the April Drug and Therapeutics Bulletin (DTB) says there is certainly scant evidence that over-the-counter remedies for basic insect bites function, suggesting that in most circumstances, no therapy at all is adequate.

The DTB concludes:

"There is small evidence for the efficacy of remedies for easy insect bites. The signs and symptoms are typically self limiting and in lots of situations, no therapy could be essential."

The majority of the insect bites inflicted on persons within the UK are from midges, mosquitoes, flies, fleas and bedbugs, searching for a blood meal.

Once they bite, these insects inject saliva in to the wound, causing a reaction, which include itching and inflammation. 

Some bites can lead to infection, an eczema flare-up, or anaphylactic shock. Clearly these reactions warrant suitable remedy, says DTB, but which is not what their evaluation is about: their beef is using the over-the-counter medicines employed to treat the vast majority of milder reactions: the itching, swelling, discomfort, and secondary challenges that come from scratching.

As an example, steroid creams have already been shown to assist men and women with eczema, but there's no evidence they're helpful for the kind of itching and inflammation you receive from an insect bite, says DTB.

Also, there is absolutely no evidence that steroid tablets function for serious localized and systemic reactions to insect bites, regardless of the reality they're advised for this.

DTB urges folks to utilize steroid creams extremely sparingly and under no circumstances apply them for the face or broken skin.

Yet another remedy they raise doubts about will be the widely advised antihistamine tablet, made use of for pacifying the itching that accompanies insect bites. But based on DTB, there's small evidence to help this either.

DTB says they could discover no difficult evidence on the effectiveness of Crotramiton against itching. They cite a note inside the British National Formulary, the UK expert's drug bible, that says the drug is of "uncertain value".

There's small evidence that antiseptics and astringents relieve itching or burning, even though there's some evidence that dilute ammonium resolution (counter-irritant) assists, says DTB.

As for creams that include painkillers or anaesthetics like lidocaine, benzocaine, at times with antihistamines and antiseptics, DTB says they're "marginally helpful and occasionally trigger sensitisation".

DTB suggests that applying a cloth soaked in cold water for the wound is normally essentially the most helpful technique to treat a straightforward insect bite.

The evaluation will not consist of remedies for bites from ticks, mites and lice.

DTB is published by BMJ Publishing Group Ltd. It truly is not a peer-reviewed journal; its articles are created by editors in consultation with specialists.

Written by Catharine Paddock PhD