Olfactory and taste dysfunction after bilateral middle cerebral artery stroke.

Area of Science:

• Neurology
• Neuroscience
• Sensory Science

Background:

• Acquired olfactory and gustatory dysfunction are typically linked to orbitofrontal tumors or head trauma.
• Dysfunction of smell and taste following ischemic stroke is infrequently documented.

Purpose of the Study:

• To report a rare case of smell and taste impairment after an ischemic stroke.
• To explore the potential neurological basis for sensory dysfunction post-stroke.

Main Methods:

• Case report of a patient experiencing olfactory and gustatory deficits.
• Neuroimaging analysis to identify the stroke's location and extent.
• Correlation of clinical symptoms with neuroanatomical findings.

Main Results:

• The patient presented with impaired sense of smell and taste.
• A localized insular frontoparietal stroke was identified.
• A similar, mirror-image infarction was present in the contralateral hemisphere.

Conclusions:

• Localized insular strokes can lead to acquired smell and taste dysfunction.
• Injury to cortical areas integrating smell and taste may cause these sensory deficits.
• This case expands the understanding of stroke-related sensory impairments.