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Hippocampal sclerosis (HS) or mesial temporal sclerosis (MTS) is a neuropathological condition with severe neuronal cell loss and gliosis in the hippocampus. [1] Neuroimaging tests such as magnetic resonance imaging (MRI) and positron emission tomography (PET) may identify individuals with hippocampal sclerosis. [ 2 ]
A common associated brain abnormality is mesial temporal sclerosis. [15] Mesial temporal sclerosis is a specific pattern of hippocampal neuronal loss accompanied by hippocampal gliosis and atrophy. [18] Complex partial seizures occur when excessive and synchronous electrical brain activity causes the impaired awareness and responsiveness. [19]
Lateral temporal lobe seizures arising from the temporal-parietal lobe junction may cause complex visual hallucinations. [2] In comparison to mesial temporal lobe seizures, lateral temporal lobe seizures are briefer duration seizures, occur with earlier loss of awareness, and are more likely become a focal to bilateral tonic-clonic seizure. [2]
Identification of common lesions associated with epilepsy like focal cortical dysplasia, mesial temporal sclerosis, microencephalocele, and heterotopia require thorough review of images by trained clinicians as the changes can be very subtle and easily missed if not specifically evaluated for.
Main symptoms of multiple sclerosis Symptoms and findings in multiple sclerosis. Multiple sclerosis can cause a variety of symptoms varying significantly in severity and progression among individuals: changes in sensation (hypoesthesia), muscle weakness, abnormal muscle spasms, or difficulty moving; difficulties with coordination and balance; problems in speech or swallowing (), visual ...
Nearly 2.3 million people are estimated to be living with multiple sclerosis around the world, but when Montel Williams received his official diagnosis back in 1999, not much was known about the ...
Balo concentric sclerosis, an unusual presentation of plaques forming concentric circles, which can sometimes get better spontaneously. Schilder disease or diffuse myelinoclastic sclerosis: is a rare disease that presents clinically as a pseudotumoural demyelinating lesion; and is more common in children. [7] [8]
Multiple sclerosis is typically diagnosed based on the presenting signs and symptoms, in combination with supporting medical imaging and laboratory testing. [4] It can be difficult to confirm, especially early on, since the signs and symptoms may be similar to those of other medical problems. [5] [6]