What Are the Symptoms and Risk Factors of Encephalitis?

What are the symptoms and risk factors of encephalitis?

Viral encephalitis may show following symptoms:

  • Headache
  • Fever
  • Aches in muscles or joints
  • Fatigue or weakness
  • Confusion, agitation or hallucinations
  • Seizures
  • Loss of sensation or paralysis in certain areas of the face or body
  • Muscle weakness
  • Problems with speech or hearing
  • Loss of consciousness

Signs and symptoms in infants and young children, can also include:

  • Bulging in the soft spots (fontanels) of an infant’s skull
  • Body stiffness
  • Poor feeding or not waking for a feeding
  • Nausea and vomiting

Risk factors

  • Age-young children and older adults are at greater risk of most types of viral encephalitis
  • Weakened immune system
  • Geographical regions and seasons that are good for certain viruses



* The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.