Lyme Disease Prevention: UK Guide to Tick Safety and Treatment

Lyme disease, or Lyme borreliosis, is a bacterial infection caused by Borrelia burgdorferi. In the UK, it is transmitted through the bite of an infected black-legged tick (also known as a sheep tick or deer tick). While not all ticks carry the bacteria, the number of cases in the United Kingdom has risen steadily as more people engage in outdoor activities in areas where ticks thrive.

According to NHS and NICE guidance, Lyme disease is most common in woodland, heathland, and tall grassy areas, particularly in the Scottish Highlands, the Lake District, and southern England. However, ticks can also be found in urban parks and gardens. Understanding how to prevent bites and recognising the early signs is vital for anyone planning to travel or hike within the UK.

The most distinctive symptom of Lyme disease is a skin rash called erythema migrans. This rash typically appearing 3 to 30 days after being bitten. It is often described as a 'bullseye' rash because it typically looks like a red circular patch that expands over time, with a clearer area in the centre.

Key characteristics of the rash include:

• It is usually not itchy or painful.
• It expands slowly over several days or weeks.
• It can appear anywhere on the body, not just at the site of the bite.
• It may look different on darker skin tones, appearing more like a bruise or a solid dark patch.

Some people also experience flu-like symptoms in the early stages, such as fatigue, muscle and joint pain, headaches, and a high temperature (fever). It is important to note that roughly one-third of people with Lyme disease do not develop a rash at all, making the other symptoms even more significant if you know you have been in a high-risk area.

Prevention is the most effective way to avoid Lyme disease. If you are walking in the countryside or areas with long grass, follow these safety measures:

• Cover up: Wear long-sleeved shirts and tuck your trousers into your socks to prevent ticks from reaching your skin.
• Choose light colours: Wearing light-coloured clothing makes it easier to spot dark ticks crawling on you.
• Use repellent: Apply insect repellent containing DEET to exposed skin and clothing.
• Stay on paths: Avoid walking through deep vegetation or leaf litter where ticks are most likely to be waiting.
• Check yourself: After spending time outdoors, perform a thorough 'tick check' on your body, paying close close attention to the groin, armpits, behind the knees, and the scalp. Check your children and pets as well.

If you find a tick attached to your skin, do not panic. The risk of transmission is low if the tick is removed within the first 24 hours. However, you must remove it correctly to avoid squeezing the stomach contents into your bloodstream.

The correct removal method:

• Use fine-tipped tweezers or a specialised tick-removal tool (available from most UK pharmacies).
• Grasp the tick as close to the skin as possible (at its mouthparts).
• Pull upwards slowly and firmly without twisting or jerking, as this can break off the head.
• Once removed, clean the bite area with antiseptic or soap and water.
• Never use matches, cigarette ends, or substances like petroleum jelly to 'suffocate' the tick, as this increases the risk of infection.

If you have been bitten by a tick or have spent time in a high-risk area and develop symptoms, you should seek medical advice promptly. You can speak to a GP online if you notice a rash or feel unwell within a month of a suspected bite.

An online doctor can review photos of your rash via a secure consultation and discuss your history. According to NICE guidelines, if the erythema migrans rash is present, a clinical diagnosis can be made without the need for blood tests, and a course of antibiotics (usually doxycycline or amoxicillin) can be prescribed immediately.

If you do not have a rash but have other symptoms, a GP may arrange for a blood test. However, these tests can be unreliable in the first few weeks of infection, so a follow-up test may be necessary if symptoms persist. Early treatment is highly effective and usually leads to a full recovery.

If Lyme disease is left untreated, or if the initial treatment is delayed, the infection can spread to other parts of the body. This can lead to more serious and persistent issues, including:

• Neurological symptoms: Such as facial palsy (drooping of one side of the face) or nerve pain.
• Lyme arthritis: Swelling and pain in large joints, particularly the knees.
• Heart problems: Such as inflammation of the heart muscle (myocarditis) or heart block.
• Meningitis: Causing severe headaches and a stiff neck.

While most patients respond well to the standard 21-day course of antibiotics, a small number of people experience persistent symptoms like fatigue and muscle aches, often referred to as 'Post-treatment Lyme Disease Syndrome'. Ongoing research is being conducted in the UK to better understand and manage these long-term effects.