EXPERTS are warning that walkers can develop an allergy to meat after being bitten by a type of tick found in the New Forest.

New studies have shown that people targeted by castor bean ticks, also known as sheep ticks, can also become intolerant to dairy food.

The tiny insects carry a sugar called alpha-gal, which is also found in red meat.

Alpha-gal is normally harmless when digested but a bite can result in it entering the bloodstream.

As a result the immune system produces anti-bodies to fight the invader.

Next time the person eats red meat they can suffer an allergic reaction that includes itching, burning and even throat swelling.

Dr Malcolm Shepherd from the University of Glasgow, who has diagnosed several cases said: “Allergy to meat is rare and the emerging understanding of alpha-gal allergy shows it can present in unusual and unexpected ways.

“It can be difficult to diagnose because of its similarity to other conditions."

Dr Nigel Kellow, a 53-year-old consultant from London, received an alpha-gal allergy diagnosis in 2012.

He said: “I was bitten by several ticks when out walking in Devon.

“Six weeks later I developed an incredibly painful and itchy condition. It took a further six months and numerous tests to identify I had the alpha-gal allergy."

Talking about the impact of the bites, Dr Kellow added: “This little critter has changed my life. I need to be particularly careful when eating out. My allergy is so severe I can’t eat potatoes cooked in beef dripping.”

The ticks that can carry alpha-gal are found in the New Forest, the Highlands and Dartmoor National Park.

Walkers are being reminded once again to take precautions against ticks when out and about within the New Forest.

“The new test for alpha-gal will allow doctors with an interest in allergy to identify patients in whom allergy to meat may previously have been missed or discounted,” added Dr Shepherd.

“As ticks appear to be on the rise, this may become an increasing allergy in the future.”

The alpha-gal blood test is now widely available for clinicians through most NHS and private immunology service laboratories.

Walkers are urged to take simple steps to avoid ticks, including tucking trousers into socks, carrying antiseptic wipes and a tool to safely remove one from your skin should you need to. Always stick to the centre of pathways away from overhanging shrubs and bushes.