Speech difficulties in MS

Speech difficulties in MS

30/10/2023
Elena Kelly
378

Speech difficulties in MS

(Original article in English, auto-translated with Microsoft Translator in other languages)

Speech in people with MS can often be impaired, resulting in decreased communication skills and quality of life. Speech problems may happen at any stage of MS. For most people they are relatively mild and manageable. Some of the speech difficulties people with MS can face include:

  • Slurring of speech
  • Problems with volume, quality and strength of voice
  • Weakness of the chest muscles, making breathing and speech harder


Dysarthria (when a person has difficulty speaking due to weakness or impaired coordination in the muscles involved in speech) is the most common expressive communication deficit presenting in people with MS with prevalence around 45%. Dysphonia (an impairment of voice production) occurs when MS affects the brain areas that control the larynx. It can affect a person’s ability to control volume and pitch. It may also cause a person’s voice to sound hoarse. Phonation difficulties that can affect individuals include vocal deficits, breathiness, and volume abnormalities. Slow speech rate and long/extended pauses are also commonly observed and described in people with MS.3 People with more advanced MS may find that the rhythm and intonation of their speech are disrupted, causing them to sound ‘robotic’. This is sometimes referred to as scanning speech.

Treatment of speech disorders in MS often involves a speech and language therapist or a physiotherapist who will develop an individual plan of speech therapy exercises to help with speech, language, and cognitive communication. Respiratory muscle training can also help to strengthen breathing muscles and improve lung volume capacity.

How can nurses contribute by offering tips and advice to individuals facing difficulties with their speech?

  • Try to speak slowly and regularly, keep sentences short.
  • Plan to have important conversations when feeling least tired, as fatigue can make communication more difficult.
  • Make the most of non-speech aspects of communication like facial expression, gesture and even referring to photos, written things or objects.
  • Using email or texts might be easier than speaking to someone on the phone when speech is difficult.
  • Plan and support more complex conversations by making written notes and referring to them.

Sources | Further reading

  • Noffs G, Boonstra FMC, Perera T, et al. Speech metrics, general disability, brain imaging and quality of life in multiple sclerosis. Eur J Neurol. 2020;28:259–68.
  • Noffs G, Perera T, Kolbe S, et al. What speech can tell us: A systematic review of dysarthria characteristics in multiple sclerosis. Autoimmun Rev. 2018;17:1202–1209.
  • Neighbors C, Song SA. Dysphonia. [Updated 2022 May 1]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan
  • MS Trust. Speech problems. Available at https://mstrust.org.uk/a-z/speech-problems.
Educational reads Patient support
© Copyright EMSP VZW