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Morvan's syndrome is a rare, complex autoimmune syndrome comprising peripheral nerve hyperexcitability, dysautonomia, insomnia, and encephalopathy. In this case report, we highlight the clinical and pathological findings of an elderly gentleman who presented to us with clinical features of Morvan's syndrome associated with anti-contactin-associated protein 2 (CASPR-2) antibodies. Histopathology [Figure 3] revealed cortical atrophy with gliosis and mild microglial proliferation. Microglial activation and gliosis were observed in the hippocampus, hypothalamus, and thalamus. Brainstem showed multifocal inflammation. Mild inflammation was observed in the leptomeninges. Morvan's syndrome is an autoimmune disease with antibodies targeted against CASPR within the voltage-gated potassium channel (VGKC) complex. Early diagnosis and treatment play a key role in the management of patients. Most patients show a good response when treated with plasmapheresis and steroids. This patient presented to us late into the illness and succumbed. [ABSTRACT FROM AUTHOR]

The term "la chorιe fibrillare" was used by the French physician Augustine Marie Morvan to describe a syndrome showing hyperactivity features involving the central, autonomic, and peripheral nervous system. The central hyperactivity symptoms are confusion, behavioral problems, hallucinations, myoclonus, and insomnia; the autonomic hyperactivity symptoms are hyperhidrosis and variations in blood pressure; and peripheral hyperexcitability is characterized by painful cramps, myokymia, and neuromyotonia. Here, we present a case that has typical features of Morvan's syndrome and provides a brief description based on available literature. [ABSTRACT FROM AUTHOR]

Background: Paraneoplastic vasculitic neuropathy (PVN) is a rare paraneoplastic syndrome. It is characterized by non-systemic subacute vasculitic neuropathy. It is most commonly associated with small cell lung cancers (SCLC) and lymphomas. PVN presents as a painful symmetrical or asymmetrical sensorimotor axonal neuropathy. The neurological symptoms may predate the tumor and may be the initial manifestations, or they may develop after a tumor is diagnosed. Recognition of this entity is important because of its potential treatability. Aim: To study the clinical features of PVN and briefly review the literature. Materials and Methods: The data was collected retrospectively from the medical records of our hospital. Results: Of the 14 cases of paraneoplastic neuropathies, 4 had a PVN. The age of onset was more than 50 years and there was no sex preponderance. Pain was seen in three patients. Two patients were previously treated for a thymoma. Two patients, following their presentation with PVN, were diagnosed with a colonic carcinoma and lung carcinoma, respectively. Conclusions: The recognition of PVN is important as this syndrome may respond to immunosuppression and tumor removal. [ABSTRACT FROM AUTHOR]

The French physician Augustine Marie Morvan first used the term 'la choriotae fibrillare' to describe a syndrome characterized by peripheral nerve hyperexcitability, dysautonomia, insomnia and fluctuating delirium. There are no published reports of the condition from the Indian subcontinent. We report the first such case from the region. Our patient, a 24-year-old male, presented with easy fatigability and stiffness in both the calves for 18 months; continuous twitching of muscles of all four limbs and jaw for two months; hyperhydrosis, palpitations, urinary symptoms, burning dysesthesia in hands, insomnia and abnormal sleep behavior for about a month. Patient had bilateral hyper-reflexia with extensor plantar on the right and equivocal response on the left. Electromyography revealed continuous muscle fiber activity. Thyroid function test, electroencephalography, computerized tomography scan (head) and routine cerebrospinal fluid analysis were normal. The patient showed marked clinical and electrophysiological improvement on prednisolone along with symptomatic therapy over the next two months. [ABSTRACT FROM AUTHOR]