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glossary - r

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Reasonable adjustments - changes that employers or service providers are expected to make so that someone with a disability is not put at a disadvantage compared to someone without a disability. Reasonable adjustments are required to be considered under the Equality Act 2010.

Receptor  – part of the cell membrane that receives and binds neurotransmitters.

Reference range - in therapeutic drug monitoring, the range of drug doses which are thought to be most likely to work. These ranges are general guidelines only.

Reflex epilepsy – where a person’s seizures happen in response to a certain trigger. Reflex epilepsy includes ‘photosensitivity’, ‘reading epilepsy’ (seizures triggered by reading) and ‘startle epilepsy’ (seizures triggered by a sudden shock or loud noise).

Refractory epilepsy – epilepsy that does not respond to AEDs (AEDs do not stop the seizures). This is also called intractable, drug-resistant or difficult to control epilepsy.

Rescue medication – medication that is given to a person when they are having prolonged or repeated seizures to stop status epilepticus from happening. It is usually either rectal diazepam or buccal midazolam. These are only given in an emergency: they are not the same as AEDs, which are taken everyday to prevent seizures. We tend to prefer the term 'emergency medication'.

Resting potential  – the electrical state of a neurone when no messages are being sent.

Risk assessment - an assessment of someone's safety and possible risks. This might be at work, at home or any other area. Assessments look at risks to health and safety as well as ways to reduce risk, such as making reasonable adjustments or taking safety measures.