EpistemisCortical hypoesthesia
Specialty: Neurology.
Why it occurs
- Ischemic stroke in the territory of the middle cerebral artery (lesion of the contralateral parietal lobe)
- Primary parietal tumors (glioblastoma, astrocytoma) or metastatic
- Traumatic injury to the parietal lobe
- Chronic traumatic encephalopathy
- Posterior Cortical Atrophy (atypical variant of Alzheimer's disease)
Initial workup
Clinical evaluation through tests of stereognosia (identifying common objects with eyes closed), graphesthesia (identifying numbers or letters written on the palm of the hand), and discrimination between two points; 3 Tesla brain MRI to locate the parietal structural or degenerative lesion; electroencephalogram to rule out focal parietal seizures.
red flags
Sudden loss of discriminative sensitivity in a hand or body (inability to recognize objects by touch or numbers drawn on the skin) with preservation of primary tactile sensitivity, associated with subtle motor weakness or deviation of the corner of the mouth, indicating an acute parietal ischemic stroke.
Standard management
- Secondary prevention antithrombotic treatment if the etiology is ischemic
- Sensitive physiotherapy and occupational therapy focused on visual compensation for fine manipulative tasks.
Educational guidance for study. It is NOT a prescription recommendation. The actual choice depends on the cause, the patient, and current guidelines.
- Area
- Neurology
- Listed causes
- 5
- Treatment options
- 2