Gerstmann syndrome
| Gerstmann syndrome | |
|---|---|
 |
|
| Principal fissures and lobes of the cerebrum viewed laterally. (Parietal lobe is shown in yellow) | |
| Classification and external resources | |
| Specialty | psychiatry |
| ICD-10 | F81.2 |
| ICD-9-CM | 784.69 |
| DiseasesDB | 30728 |
| MeSH | D005862 |
Gerstmann syndrome is a neuropsychological disorder that is characterized by a constellation of symptoms that suggests the presence of a lesion in a particular area of the brain. (It should not be confused with Gerstmann-Sträussler-Scheinker syndrome, which is a transmissible spongiform encephalopathy.) Destruction to the inferior parietal lobule of the dominant hemisphere results in Gerstmann's syndrome.
It is named for Josef Gerstmann.
Gerstmann syndrome is characterized by four primary symptoms:
This disorder is often associated with brain lesions in the dominant (usually left) hemisphere including the angular and supramarginal gyri near the temporal and parietal lobe junction. There is significant debate in the scientific literature as to whether Gerstmann Syndrome truly represents a unified, theoretically motivated syndrome. Thus its diagnostic utility has been questioned by neurologists and neuropsychologists alike. The angular gyrus is generally involved in translating visual patterns of letter and words into meaningful information, such as is done while reading.
In adults, the syndrome may occur after a stroke or in association with damage to the parietal lobe.
In addition to exhibiting the above symptoms, many adults also experience aphasia, which is a difficulty in expressing oneself when speaking, in understanding speech, or in reading and writing.
There are few reports of the syndrome, sometimes called developmental Gerstmann syndrome, in children. The cause is not known. Most cases are identified when children reach school age, a time when they are challenged with writing and math exercises. Generally, children with the disorder exhibit poor handwriting and spelling skills, and difficulty with math functions, including adding, subtracting, multiplying, and dividing. An inability to differentiate right from left and to discriminate among individual fingers may also be apparent. In addition to the four primary symptoms, many children also suffer from constructional apraxia, an inability to copy simple drawings. Frequently, there is also an impairment in reading. Children with a high level of intellectual functioning as well as those with brain damage may be affected with the disorder.
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