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A to Z of neurological topics

In this section we feature information on a number of tests, treatments and conditions, with links for more information either within this website or on external sites where possible. If you can't find what you're looking for, you may wish to speak with one of our Helpline team who may be able to answer your questions. Send an email to [email protected] or call free on 0808 808 1000.

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    An infection of the inner ear that causes a delicate structure known as the labyrinth to become inflamed, and which affects your hearing and balance.


    See our Dizziness and balance problems booklet

    Lhermitte-Duclos disease


    A type of tumour that can affect the brain and that develops from cells in the part of the brain known as the cerebellum.

    Lumbar puncture


    A procedure performed to extract cerebrospinal fluid – either to reduce pressure around the spinal cord and brain, or to take a sample of the fluid for analysis – and that involves inserting a hollow needle into the subarachnoid space in the region of the lower back.


    See our Lumbar puncture fact sheet


    (also known as systemic lupus erythematosus or SLE)


    An inflammatory condition that affects the connective tissue in joints, skin, the nervous system, and other organs.

    Lyme disease


    A bacterial infection that is spread to humans by infected ticks, that can cause fever, headache, fatigue and a characteristic skin rash called erythema migrans.



    A type of tumour that can occur in the brain and spine and develops from cells of the lymphatic system (a part of the immune system.)


    See our Spinal tumours booklet