Tick-borne encephalitis history and symptoms

Tick-borne encephalitis Microchapters
Home
Patient Information
Overview
Historical Perspective
Classification
Pathophysiology
Causes
Differentiating Tick-borne encephalitis from other Diseases
Epidemiology and Demographics
Risk Factors
Natural History, Complications and Prognosis
Diagnosis
History and Symptoms
Physical Examination
Laboratory Findings
MRI
CT
Other Diagnostic Studies
Treatment
Medical Therapy
Future or Investigational New Therapies
Prevention
Case Studies
Case #1
Tick-borne encephalitis history and symptoms On the Web
Most recent articles
Most cited articles
Review articles
CME Programs
Powerpoint slides
Images
American Roentgen Ray Society Images of Tick-borne encephalitis history and symptoms All Images X-rays Echo & Ultrasound CT Images MRI
Ongoing Trials at Clinical Trials.gov
US National Guidelines Clearinghouse
NICE Guidance
FDA on Tick-borne encephalitis history and symptoms
CDC on Tick-borne encephalitis history and symptoms
Tick-borne encephalitis history and symptoms in the news
Blogs on Tick-borne encephalitis history and symptoms
Directions to Hospitals Treating Tick-borne encephalitis
Risk calculators and risk factors for Tick-borne encephalitis history and symptoms

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Ilan Dock, B.S.

Overview

Tick-borne encephalitis infections will often present themselves with biphasic clinical manifestations. Following an incubation period of 7 to 14 days, a patient will experience early onset, non-specific flu like symptoms. A patient will then experience a remission period of lessened symptoms or will appear to be completely asymptomatic. A second phase will occur in which patients will experience an infection of the central nervous system resulting in a number of neurological, clinical manifestations.

History and Symptoms

• Symptoms associated with tick-borne encephalitis will appear after an average incubation period of 7 to 14 days.
• The infection usually occurs as a biphasic disease, with early onset symptoms, a period lessened symptoms or asymptomatic(remission), and finally a second phase within 20-30% of patients.

Early Onset

• Fever
• Malaise
• Anorexia
• Muscle aches
• Headache
• Nausea
• Vomiting

Remission Period

• Lessened non-specific flu like symptoms
• Completely asymptomatic

Second Phase

• Infection of the central nervous system
• Symptoms associated with meningitis including: fever, headache, and a stiff neck
• Encephalitis
• Drowsiness
• Confusion
• Sensory disturbances
• Motor abnormalities such as paralysis
• Meningoencephalitis

Natural progression of biphasic, tick-borne encephalitis.

• Although the above list relates to potential symptoms associated with a full course infection, many infected individuals will remain asymptomatic without any signs of symptoms.
• In addition to the the aforementioned list, symptoms may vary in severity, based on the subtype responsible for infection as well as mode of transmission.