Hepatitis & its effect on Brain

 

👉👉 Hepatitis & its effect on Brain

Hepatitis C can indirectly but significantly affect the brain through a condition called hepatic encephalopathy (HE).  When the liver is damaged and unable to filter toxins from the blood effectively, these harmful substances, such as ammonia, can travel to the brain. This buildup of toxins disrupts normal brain function, leading to a spectrum of neurological and psychiatric symptoms. 

These can range from subtle changes in mood, concentration, and sleep patterns to more severe issues like confusion, disorientation, personality changes, muscle tremors, and in advanced stages, even coma. Though neurological complications are not common in Hepatitis E virus infection but it is reported that the virus infects brain microvascular endothelial cells, crosses blood- brain barrier & invades central nervous system,

The neurological manifestations linked to Hepatitis E can include:

• Guillain-Barré Syndrome (GBS): An acute inflammatory polyneuropathy causing muscle weakness and sometimes paralysis. This is one of the most frequently reported neurological complications.

• Neurolgic Amyotrophy(Parsonage-Turner-Syndrome): Characterized by sudden, severe pain in the shoulder and arm, followed by weakness and muscle wasting.   

• Encephalitis and Meningoencephalitis: Inflammation of the brain (encephalitis) or both the brain and the surrounding membranes (meningoencephalitis). Symptoms can include altered mental state, seizures, and headaches.   

• Myelitis: Inflammation of the spinal cord, which can lead to weakness, sensory changes, and bowel/bladder dysfunction.   

• Bell's Palsy: Sudden weakness or paralysis of one side of the face.   

• Peripheral Neuropathy: Damage to the nerves outside the brain and spinal cord, causing pain, numbness, tingling, or weakness, often in the hands and feet.

• Other rare manifestations: These include vestibular neuritis, acute ataxic neuropathy, oculomotor palsy, myositis, seizures, pseudotumor cerebri, and bilateral pyramidal syndrome. In rare cases, reversible lesions in the corpus callosum have also been reported.

On the other hand, Hepatitis A is a highly contagious liver infection caused by the Hepatitis A virus (HAV). Unlike hepatitis B and C, hepatitis A does not cause chronic liver disease, and most people recover fully within a few weeks to months without any lasting liver damage. Neurological complications are rare but have been reported. These can include:   

• Guillain-Barré Syndrome (GBS): An autoimmune disorder affecting the peripheral nerves, leading to muscle weakness and paralysis.  

• Encephalitis: Inflammation of the brain, which can cause altered mental state, seizures, and headaches.

• Acute Cerebellar Ataxia: A condition characterized by sudden problems with coordination and balance.   

• Opsoclonus-Myoclonus Syndrome (OMAS): A rare neurological disorder characterized by rapid, involuntary eye movements (opsoclonus) and jerky muscle movements (myoclonus). 

The severity of HE often correlates with the degree of liver dysfunction, and episodes can be triggered by factors like infections, gastrointestinal bleeding, or electrolyte imbalances. Prompt recognition and management of HE are crucial to minimize potential long-term neurological consequences.