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A wide spectrum of sensory syndromes with different topographic patterns have been described in patients with cerebral infarction.1–4 The sensory abnormalities may be limited to small areas, mimicking a radicular or trunk distribution, mainly for lesions in sensory cortex and thalamus.
Case report.
A 31-year-old man suddenly had a right arm pain, numbness, and burning sensation on his right forearm and hand, predominant on the ulnar side. He also reported an expressive aphasia that resolved in a few minutes. There was no history of previous strokes. Two hours later, at admission, neurologic examination revealed a full sensory loss for pinprick and temperature modalities restricted to the V digit, the lateral side of the IV digit, the lateral palm, and the dorsal area of his right hand (figure, A and B). Lemniscal sensory modalities were normal. The hypoesthesia strictly coincided with the sensory distribution of the ulnar nerve. Moreover, the patient had a fastidious hyperalgesia for brush, touch, and pinprick stimuli. There was no evidence of motor impairment; specifically, the ulnar-dependent movements were normal. The rest of the …
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