Cannabis is a naturally occurring drug made from parts of the cannabis plant. It has been used throughout history both for medicinal and social purposes. However, at the present time cannabis is illegal to use in many countries, including the UK.

Carbamazepine is an anti-epilepsy drug used in multiple sclerosis (MS) to treat pain associated with spasticity and spasms and trigeminal neuralgia.

Your journey with MS may bring you into contact with a wide variety of health care professionals as you seek diagnosis, treatment and support for your condition.

A urinary catheter is a thin, flexible tube used to drain urine from the bladder. Urine is usually collected in a drainage bag, or drained directly into a toilet.

Strategic Health Authorities and Primary Care Trusts were replaced by NHS England and Clinical Commissioning Groups in April 2013.

Chronic cerebrospinal venous insufficiency (CCSVI) was a theory that suggested vein abnormalities may contribute to nervous system damage in multiple sclerosis.

The nervous system is the network of nerves that allows the body to send messages to and from muscles and organs and to maintain awareness of the outside world through the senses.

Cerebrospinal fluid (CSF) is a clear, colourless liquid that surrounds the entire surface of the central nervous system. This acts to cushion the brain within the casing of the skull and and helps support the weight of the brain. Analysis of the CSF is sometimes used to help diagnose MS.

Chemotherapy refers to cell killing (cytotoxic) drugs. Although the word is better known as a description of treatments for cancer, several chemotherapy drugs have been used in multiple sclerosis.