Spastic quadriparesis syndrome means weakness in all four limbs with increased muscle tone (stiff, tight muscles) because the upper motor neuron (UMN) system is...
Neurolipomatosis means there is an overgrowth of normal fat and fibrous tissue inside a peripheral nerve. The nerve becomes thick, bulky, and sometimes feels...
Acute hemorrhagic encephalomyelitis is a sudden and very aggressive inflammation of the brain (and sometimes the spinal cord). It attacks the white matter, which...
Acute haemorrhagic leucoencephalitis (AHLE)—also called Hurst disease, Weston Hurst syndrome, acute haemorrhagic encephalomyelitis (AHEM)—is a very rare, hyper-acute inflammation of the brain’s white matter....
Functional Neurological Symptom Disorder (FNSD) is a condition where individuals experience real neurological symptoms—such as weakness, tremors, or seizures—without any detectable structural or biochemical...
Congenital Myasthenic Syndromes (CMS) are a group of inherited disorders affecting the safety and reliability of signal transmission at the neuromuscular junction, where nerves...
Progressive Supranuclear Palsy (PSP) is a rare, progressive neurodegenerative disorder characterized by the abnormal accumulation of tau protein in certain brain regions, leading to...
Abducens nerve palsy is a condition in which the sixth cranial nerve (the abducens nerve) does not function properly, leading to weakness or paralysis...
Mixed sensory-autonomic ganglionopathy (MSAG) is a rare disorder in which both sensory and autonomic ganglia—the nerve cell clusters responsible for transmitting sensory information (touch,...
Small-fiber sensory ganglionopathy (SFSG) is a rare disorder characterized by selective injury to the cell bodies (ganglia) of the small-diameter sensory neurons in the...
Large-fiber sensory ganglionopathy, also known as sensory neuronopathy, is a disorder in which the sensory neurons located in the dorsal root ganglia—the clusters of...
Vasculitic Sensory Ataxic Neuropathy is a rare form of peripheral nerve injury in which inflammation of the small blood vessels (vasculitis) supplying the sensory...
Sarcoidosis-related sensory neuropathy is a form of peripheral nerve damage that arises as a complication of sarcoidosis, a multisystem granulomatous disease. In sarcoidosis, clusters...
POEMS syndrome is a rare multisystem disorder caused by an underlying plasma cell disorder. The name “POEMS” stands for Polyneuropathy, Organomegaly, Endocrinopathy, Monoclonal gammopathy,...