Lyme disease

About Lyme disease

Lyme disease is a bacterial infection spread to humans by infected ticks. It's also known as Lyme borreliosis.

Ticks are tiny spider-like creatures found in woodland and moorland areas. They feed on the blood of birds and mammals, including humans.

Lyme disease is usually easier to treat the earlier it's diagnosed.

Self-help guide

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Signs and symptoms of Lyme disease

Many people with early symptoms of Lyme disease develop a circular rash around the tick bite. The rash:

  • usually develops around 3 to 30 days after you've been bitten
  • is often described as looking like a bull's-eye on a dart board
  • will be red and the edges may feel slightly raised
  • may get bigger over several days or weeks
  • is typically around 15 cm (6 inches) across, but it can be much larger or smaller

Some people may develop several rashes in different parts of their body.

Around 1 in 3 people with Lyme disease won't develop a rash.

Some people with Lyme disease also have flu-like symptoms in the early stages, such as:

  • tiredness (fatigue)
  • muscle pain
  • joint pain
  • headaches
  • a high temperature (fever)
  • chills
  • neck stiffness

Non-urgent advice: Speak to a GP if:

you've been bitten by a tick and you:

  • develop a rash
  • have flu-like symptoms

Remember to tell them you've been bitten by a tick.

Later symptoms

More serious symptoms may develop if Lyme disease is left untreated or is not treated early. These can include:

  • pain and swelling in the joints
  • nerve problems – such as numbness or pain in your limbs
  • memory problems
  • difficulty concentrating
  • heart problems

Some of these problems will get better slowly with treatment. But they can persist if treatment is started late.

A few people with Lyme disease go on to develop long-term symptoms similar to those of fibromyalgia or chronic fatigue syndrome. This is known as post-infectious Lyme disease. It's not clear exactly why this happens. It's likely to be related to overactivity of your immune system rather than continued infection.

How you get Lyme disease

If a tick bites an animal carrying the bacteria that cause Lyme disease, the tick can become infected. The tick can then transfer the bacteria to a human by biting them.

Ticks can be found in any areas with deep or overgrown plants where they have access to animals to feed on.

They're common in woodland and moorland areas, but can also be found in gardens or parks.

Ticks don't jump or fly. They climb on to your clothes or skin if you brush against something they're on. They then bite into the skin and start to feed on your blood.

Generally, you're more likely to become infected if the tick is attached to your skin for more than 24 hours. Ticks are very small and their bites are not painful, so you may not realise you have one attached to your skin.

Who's at risk and where are ticks found?

The risk of getting Lyme disease is higher:

  • for people who spend time in woodland or moorland areas
  • from March to October because more people take part in outdoor activities

Ticks are found throughout the UK and in other parts of Europe and North America. There are a high number of ticks in the Scottish Highlands.

It's thought only a small proportion of ticks carry the bacteria that cause Lyme disease. Being bitten doesn't mean you'll definitely be infected. However, it's important to be aware of the risk and speak to a GP if you start to feel unwell.

Diagnosing Lyme disease

Diagnosing Lyme disease is often difficult as many of the symptoms are similar to other conditions.

There are 2 kinds of blood test use to diagnose Lyme disease. The tests are not always accurate in the early stages of Lyme disease. So you may need tested more than once if you still have symptoms after a negative result.

Treating Lyme disease

If you have symptoms of Lyme disease, you'll normally be given antibiotics.

If you're prescribed antibiotics, it's important you finish the course even if you're feeling better. This will help ensure all the bacteria are killed.

If your symptoms are particularly severe, you may need antibiotic injections (intravenous antibiotics).

Some of the antibiotics used to treat Lyme disease can make your skin more sensitive to sunlight. You should avoid prolonged exposure to the sun and not use sunbeds until after you have finished the treatment.

There's currently no agreement on the best treatment for post-infectious Lyme disease. This is because the underlying cause is not yet clear. Be wary of internet sites offering alternative diagnostic tests and treatments. These may not be supported by scientific evidence.

Preventing Lyme disease

There is currently no vaccine available to prevent Lyme disease. The best way to prevent it is to adopt easy habits when you're in the countryside or near wildlife.


  • keep to footpaths and avoid long grass when out walking
  • wear appropriate clothing (a long-sleeved shirt and trousers tucked into your socks)
  • wear light-coloured fabrics that may help you spot a tick on your clothes
  • use insect repellent on exposed skin
  • check your skin for ticks
  • check your children's head and neck areas, including their scalp
  • make sure ticks are not brought home on your clothes
  • check that pets do not bring ticks into your home in their fur

It's particularly important to check your skin for ticks at the end of the day. This includes your:

  • head
  • neck
  • skin folds – such as armpits, groin and waistband

You should remove any ticks you find quickly.

How to remove a tick safely (

  1. Using fine-toothed tweezers, gently grip the tick as close to the skin as possible.
  2. Pull steadily away from the skin without twisting or crushing the tick.
  3. Wash your skin with water and soap afterwards.
  4. Apply an antiseptic cream to the skin around the bite.

Don't use a lit cigarette end, a match head or substances such as alcohol or petroleum jelly to force the tick out.

Some vets and pet shops sell cheap tick removal devices. These may be useful if you often spend time in areas where there are ticks.