Symptoms at onset

In mild cases of encephalitis, symptoms may resemble the flu. In severe cases, symptoms may include some or all of the following:

• Behavioral and personality changes              
• Confusion or disorientation                            
• Extreme fatigue                                             
• Headache                                                       
• Lack of concentration                                     
• Loss of consciousness                                    
• Muscle weakness                                            
• Rash                                                                
• Seizures                                                           
• Stiff neck and back                                          
• Vomiting and/or diarrhea 
• Coma
• Difficulty swallowing or breathing
• Fever
• Inability to emote
• Lethargy and reduced consciousness
• Memory loss (short-term or long-term)
• Partial paralysis
• Sensitivity to light and/or sound
• Speech, hearing and vision problems
• Tingling and numbness
• Hallucinations

This list contains the most common symptoms reported by patients and physicians, and is not intended to be exhaustive.