Related Experiment Video
Updated: Mar 27, 2026

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021
Episodic Aphasia Associated With Cortical Spreading Depression After Subdural Hemorrhage Evacuation
1Department of Neurology, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.
Insights
Cortical spreading depression (CSD) can cause transient neurological symptoms mimicking stroke or seizures. This case highlights CSD diagnosis and treatment in a patient with post-surgical deficits.
Area of Science:
- Neurology
- Neuroscience
Background:
- Cortical spreading depression (CSD) is implicated in various neurological conditions, including migraine and stroke.
- Clinical diagnosis of CSD is challenging due to its mimicry of seizures and acute stroke.
- CSD can present with transient focal neurological deficits.
Purpose of the Study:
- To report a case of a patient with post-subdural hematoma evacuation who developed episodic neurological deficits.
- To discuss the diagnostic approach and treatment strategies for suspected cortical spreading depression.
- To emphasize the importance of considering CSD in the differential diagnosis of transient focal neurological deficits.
Main Methods:
- Case report of a 77-year-old male patient.
- Multimodal diagnostic approach to evaluate episodic aphasia and neurological deficits.
- Review of clinical presentation, diagnostic workup, and treatment interventions.
Main Results:
- The patient presented with episodic aphasia, slurred speech, and focal neurological deficits post-surgery.
- A diagnosis of cortical spreading depression was proposed after ruling out other causes like stroke and seizures.
- Treatment interventions demonstrated an impact on the resolution of CSD episodes.
Conclusions:
- Cortical spreading depression should be considered in cases of brief, episodic focal neurological deficits, especially after stroke or seizures have been excluded.
- A thorough diagnostic evaluation is crucial for identifying CSD.
- Appropriate treatment can positively influence the outcome and resolution of CSD episodes.
Abstract:
Cortical spreading depression (CSD) has been associated with many pathological entities including migraine, trauma, hemorrhage, and mitochondrial disease. The clinical diagnosis remains challenging without the other concomitant features such as headache because CSD can mimic seizure or acute stroke. Wereport of a 77 year-old right handed man with a left subdural hematoma evacuation that subsequently developed episodic aphasia, slurred speech, right nasolabial fold flattening, and right pronator drift. In this case report, we discuss our multimodal diagnostic approach and treatment in a patient with episodic aphasia and neurological deficits in order to propose the diagnosis of cortical spreading depression. CSD should be considered when focal deficits in brief episodes occur after stroke and seizures have been ruled out. Treatment choices as illustrated by this case report can have an impact on outcome and resolution of episodes.
Related Concept Videos
Dissociative Amnesia
Amnesia
The severity and duration of memory loss vary depending on the type and underlying cause. Amnesia is classified into two main types: retrograde and anterograde.
Retrograde amnesia is marked by the loss of memories formed before the onset of the condition. Patients may recall distant past events but often forget those occurring shortly before the incident.
Anterograde...
Higher Mental Functions of the Brain: Language
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Dissociative Disorders
Dissociative Fugue
A hallmark feature of dissociative disorders is the dissociative fugue...
Association Areas of the Cortex
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...

