Related Experiment Video
Updated: Aug 23, 2025
09:57
Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization
Published on: September 20, 2024
2.7K
Chiari Malformation Presenting as Headaches Associated with Laughter
S Mulroy1, E Delappe1, D Crimmins2
1Mayo University Hospital, Castlebar, Co. Mayo, Ireland.
Irish Medical Journal
|October 27, 2022
Summary
A 5-year-old boy experienced headaches triggered by laughter, diagnosed as Chiari Type 1 Malformation (CM-1). Conservative management with monitoring was chosen due to the generally favorable prognosis in pediatric cases.
Area of Science:
- Neurology
- Pediatric Neurology
- Neuroscience
Background:
- Chiari Type 1 Malformation (CM-1) is a hindbrain malformation defined by cerebellar tonsillar herniation.
- It is increasingly diagnosed incidentally through neuroimaging.
Observation:
- A 5-year-old boy presented with a year-long history of headaches associated with laughter.
- MRI revealed significant cerebellar tonsillar descent (19mm below foramen magnum), indicative of CM-1.
Findings:
- The patient is undergoing conservative management, including serial neuroimaging and symptom monitoring.
- CM-1 diagnosis is primarily radiographic, with cerebellar tonsillar descent of ≥5mm.
Implications:
- Conservative management is often effective, especially in pediatric populations, with many patients showing symptom improvement.
- Neurosurgical intervention is reserved for severe cases and carries an 8.2% complication rate.
Keywords:
Chiari Malformation
Related Concept Videos
01:19Cranial and Spinal Meninges
1.7K
The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
Cranial Meninges
These meningeal layers cover the cranium. The dura mater is the outermost layer of cranial meninges. It is a thick and durable membrane of dense...
Cranial Meninges
These meningeal layers cover the cranium. The dura mater is the outermost layer of cranial meninges. It is a thick and durable membrane of dense...
1.7K
01:19Muscles that Move the Head
2.5K
The muscles that move the head are a dynamic and complex group of structures that work together to facilitate a wide range of head movements, including rotation, flexion, extension, and lateral bending.
The bilateral sternocleidomastoid, or SCM, and the suprahyoid and infrahyoid muscles are significant head flexors. The SCM muscles originate at the sternum and clavicle and attach to the mastoid process of the temporal bone. The SCM contracts bilaterally to bend the head forward, whereas...
The bilateral sternocleidomastoid, or SCM, and the suprahyoid and infrahyoid muscles are significant head flexors. The SCM muscles originate at the sternum and clavicle and attach to the mastoid process of the temporal bone. The SCM contracts bilaterally to bend the head forward, whereas...
2.5K
01:21Aneurysm II: Clinical Manifestations and Diagnostic Studies
19
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
19
01:13Seizures: Classification
541
Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
541
01:15Equilibrium and Balance
4.9K
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
4.9K
01:14Cranial Bones: Superior and Posterior View
2.6K
The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
2.6K