What could cause persistent rash and itch after sandfly bites?

Doctor's Answers 1

Sorry to hear that your skin rashes are breaking out all over.

Sandfly or insect bite reaction is due to a hypersensitivity response of your body to the insect bites. In susceptible individuals, the body mounts a hypersensitive or ‘allergic’ response to the foreign protein deposited in the skin from the bite. The reaction can persist for weeks to months after the initial insect bite.

People with atopy (ie asthma, eczema or allergic rhinitis/sinus) may be more susceptible to insect bite reactions.

It is certainly possible for this hypersensitivity response to the insect bites to trigger eczema, and make you more susceptible to the rashes and outbreak you are experiencing, especially given your history of sensitive nose and sinus.

I think you should continue with general measures to prevent rashes and eczema, like using gentle soap-free cleansers and moisturizers regularly.

Avoid scratching, which can aggravate the rash. If the rash is still not well controlled or flaring, you can see your dermatologist/doctor to help control your condition.

Similar Questions

Is it possible to become reliant on acne products?

I know how frustrating it is to face the issue of persistent acne. There is no real evidence that skin gets resistant to topical products but obviously anecdotal accounts would suggest otherwise. To cut it short, it sounds like you might need some oral medications like doxycycline or isotretinoin to improve the acute flares first, while using a appropriate skin regimen. From personal experience myself, when facing a flare we tend to overdo things, be it using OXY 10 five times a day and having chemical burns, or washing our face 10 times a day.

Photo of Dr Winston  Lee

Answered By

Dr Winston Lee


What could be cause of my skin rash after giving birth?

Thanks for the very clear history and photographs. The red rash looks like a bruise and this is likely to be due to excessive pressure over the area, aggravated by the compression from the stripes which squeezes the enclosed areas. This will typically take 1 to 2 weeks to resolve. Blood tests are usually done to rule out underlying conditions like low platelets which may lead to increased susceptibilty to bleeding. I assume these tests were done and were normal. I would suggest wearing leotards without this stripe pattern so that there will not be added pressure to the skin.

Photo of Dr Colin Theng

Answered By

Dr Colin Theng


Ask any health question for free

I’m not so sure about a procedure...

Ask Icon Ask a Question

Join Human

Sign up now for a free Human account to get answers from specialists in Singapore.

Sign Up

Get The Pill

Be healthier with our Bite-sized health news straight in your inbox