Herpes Simplex Encephalitis: Symptoms and Treatment
Herpes simplex is a disease spread by the herpes virus. Herpes Simplex viral encephalitis is a central nervous system disorder associated with the presence of the herpes simplex virus. While the former manifests in the form of cold sores, the latter leads to internal degeneration of the nervous system.
The human body is consistently exposed to infection by numerous virus and bacteria that co-exist in the ecosystem around us. One such virus, the herpes virus is transmitted through oral contact with an affected person. The presence of the virus is symptomatic and asymptomatic, making diagnosis difficult. Herpes simplex commonly affects the face and mouth region and in some cases the genitals. It also manifests in the form of herpetic whitlow, gladiatorum, ocular herpes and cerebral herpes infection. Bell's palsy, Mollaret's meningitis and neonatal herpes are all different manifestations of the herpes simplex virus.
What Is Herpes Simplex Encephalitis
Herpes simplex encephalitis refers to the herpes viral infection that affects the central nervous system. It is estimated to be the direct effect of HSV-1 infection and is commonly observed in adolescents (under 18 years of age), above 50 years of age and seropositive patients who have a family medical history of orofacial herpes. The infection is spread via retrograde transmission. It passes along nerve axon and gradually moves towards the brain. Initially, the virus remains dormant in the trigeminal cranial nerve ganglion, before lodging itself within the temporal lobes of the brain.
Symptoms
HSE results in general as well as focal cerebral dysfunction. The sporadic attack does not follow a seasonal pattern. The classic symptoms are as follows:
It is characterized by the inflammation of the brain, a condition clinically referred to as encephalitis. The symptoms are quite like those associated with meningitis. Though the condition does not surface with skin lesions, the virus is the same (in basic genre), which causes the herpes simplex. The viral attack causes the neurons to be subjected to a hemorrhagic process, throughout the inferior frontal lobes and medial temporal. The mechanisms of cellular damage are virus and immune mediated processes. Brain infection is the result of direct neuronal transmission of the herpes simplex virus from some peripheral site. The virus is known to effect people across the continents, irrespective of race, sex or previous clinical history. Once contracted, the symptoms need to be addressed in time to restrict deterioration of the central nervous system and/or any fatality associated with the condition.
The treatment involves a dedicated nutritional support. The patient has to be regularly monitored for intracranial pressure and seizures. The dedicated treatment options to address increased intracranial pressure range from elevating the 'head' of the bed, to administration of mannitol and steroids. Seizures are commonly managed with the help of anticonvulsant therapy and administration of benzodiazepines. Doctors resort to biopsy and lumbar puncture only in the absence of nontoxic, antiviral medications. This neurologic emergency demands a proper evaluation for timely rehabilitation. The goal of therapies and medications are to prevent the development of further complications and reduce morbidity. Pharmacotherapy involves the use of acyclovir and vidarabine. Antivirals help to shorten the course of clinical approach, preventing the development of latency. In the absence of timely treatment, HSE results in long-term neurological damage and even death.
What Is Herpes Simplex Encephalitis
Herpes simplex encephalitis refers to the herpes viral infection that affects the central nervous system. It is estimated to be the direct effect of HSV-1 infection and is commonly observed in adolescents (under 18 years of age), above 50 years of age and seropositive patients who have a family medical history of orofacial herpes. The infection is spread via retrograde transmission. It passes along nerve axon and gradually moves towards the brain. Initially, the virus remains dormant in the trigeminal cranial nerve ganglion, before lodging itself within the temporal lobes of the brain.
Symptoms
HSE results in general as well as focal cerebral dysfunction. The sporadic attack does not follow a seasonal pattern. The classic symptoms are as follows:
- Fever;
- Headache;
- Behavioral changes like a show of confusion;
- Seizure;
- Vomiting;
- Memory loss;
- Alteration of consciousness;
- Dysphasia;
- Visual field loss;
- Papilledema;
- Anorexia;
- Muscle weakness on one side of body;
- Cranial nerve deficits;
- Increased protein in cerebrospinal fluid and lymphocytes in blood;
- Temporal lobe swelling.
It is characterized by the inflammation of the brain, a condition clinically referred to as encephalitis. The symptoms are quite like those associated with meningitis. Though the condition does not surface with skin lesions, the virus is the same (in basic genre), which causes the herpes simplex. The viral attack causes the neurons to be subjected to a hemorrhagic process, throughout the inferior frontal lobes and medial temporal. The mechanisms of cellular damage are virus and immune mediated processes. Brain infection is the result of direct neuronal transmission of the herpes simplex virus from some peripheral site. The virus is known to effect people across the continents, irrespective of race, sex or previous clinical history. Once contracted, the symptoms need to be addressed in time to restrict deterioration of the central nervous system and/or any fatality associated with the condition.
The treatment involves a dedicated nutritional support. The patient has to be regularly monitored for intracranial pressure and seizures. The dedicated treatment options to address increased intracranial pressure range from elevating the 'head' of the bed, to administration of mannitol and steroids. Seizures are commonly managed with the help of anticonvulsant therapy and administration of benzodiazepines. Doctors resort to biopsy and lumbar puncture only in the absence of nontoxic, antiviral medications. This neurologic emergency demands a proper evaluation for timely rehabilitation. The goal of therapies and medications are to prevent the development of further complications and reduce morbidity. Pharmacotherapy involves the use of acyclovir and vidarabine. Antivirals help to shorten the course of clinical approach, preventing the development of latency. In the absence of timely treatment, HSE results in long-term neurological damage and even death.
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