Article Text
Statistics from Altmetric.com
A 70-year-old woman presented with a 2-month history of gradually progressive unsteadiness. She started to fall a few weeks before assessment and was holding furniture to balance herself. She complained of recent memory loss and constipation. Additionally she was being investigated for ‘scarring on the lung’ found on a chest X-ray. She took no medications and drank no alcohol. She had no relevant family history. On examination, there was horizontal nystagmus and dysarthria (staccato-type). She had moderate gait and limb ataxia. Romberg's test was negative. Her ankle jerks were absent but sensation was intact to all modalities. We found pitting oedema below the knees. An MR scan of the brain was normal.
Question 1
How would you classify her type of ataxia?
Comment
The eye movements, speech and limb findings suggest cerebellar ataxia. While the ankle jerks were absent, her distal sensation and her Romberg's test were normal, making it unlikely that there was a concomitant sensory ataxia. The bilateral cranial nerve and limb findings suggest a generalised cerebellar process. The speed of progression is in the slower end of the subacute category (weeks to months).
This helps to exclude several common causes of cerebellar ataxia in older patients. Strokes tend to be of sudden onset and unilateral. Degenerative conditions tend to be slower and associated with other neurological findings on examination (eg, multiple system atrophy). Her age of onset and negative family history make a genetic cause less likely.
Her cerebellar ataxia could be classified as subacute, generalised and late-onset.
Question 2
What are the main causes of a subacute cerebellar ataxia?
Comment
There is a relatively short list of conditions that can cause subacute cerebellar ataxia (table 1).
- In this window
- In a new window
Causes of subacute cerebellar ataxia
Paraneoplastic cerebellar degeneration is a possibility. This tends to progress more rapidly over weeks. Patients usually …
Footnotes
Contributors DB and LW: writing of first draft and subsequent revisions.
Competing interests None declared.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed. This paper was reviewed by Martin Turner, Oxford, UK.
Linked Articles
- Editors' commentary
Read the full text or download the PDF:
Other content recommended for you
- When to consider thyroid dysfunction in the neurology clinic
- Republished: A practical approach to late-onset cerebellar ataxia: putting the disorder with lack of order into order
- A practical approach to late-onset cerebellar ataxia: putting the disorder with lack of order into order
- Ataxia associated with Hashimoto's disease: progressive non-familial adult onset cerebellar degeneration with autoimmune thyroiditis
- Mimics and chameleons in Guillain–Barré and Miller Fisher syndromes
- Severe ataxia uncovered Hodgkin’s lymphoma: do not forget CT neck when looking for covert malignancy
- Hypothyroid ataxia complicating monoclonal antibody therapy
- Cerebellar ataxia and nystagmus with GAD antibodies in a woman from the West Indies: a video demonstration
- Central nervous system neuronal surface antibody associated syndromes: review and guidelines for recognition
- Amiodarone-induced thyroid disorders: a clinical review