Related Experiment Video
Updated: Jul 10, 2026

Intracerebroventricular and Intravascular Injection of Viral Particles and Fluorescent Microbeads into the Neonatal Brain
Published on: July 24, 2016
Encephalitis in a child during atypical course of rubella
E Guler1, M Davutoglu, S Guler
1Department of Pediatrics, Faculty of Medicine, Kahramanmaras Sutcu imam University, Kahramanmaras, 46050, Turkey. ekremguler@hotmail.com
Insights
Rubella can cause encephalitis, even without a rash. This rare presentation is crucial for diagnosing neurological illness in unvaccinated children.
Area of Science:
- Pediatrics
- Neurology
- Infectious Diseases
Background:
- Rubella (German measles) is typically a mild childhood illness.
- Complications, such as encephalitis, are uncommon but serious.
- Vaccination significantly reduces rubella incidence.
Observation:
- A 9-year-old boy presented with atypical rubella symptoms: headache, fever, loss of consciousness, and lymphadenopathy, but no rash.
- Cerebrospinal fluid analysis revealed lymphocytic pleocytosis, elevated protein, and normal glucose.
- Rubella virus-specific IgM antibodies were detected in cerebrospinal fluid and serum.
Findings:
- The patient was diagnosed with rubella encephalitis, a rare manifestation of the virus.
- The absence of a rash highlights an atypical presentation of rubella.
- IgG antibodies confirmed a later-stage infection.
Implications:
- Rubella should be considered in the differential diagnosis of encephalitis in unvaccinated children, even without a characteristic rash.
- This case underscores the importance of considering less common presentations of infectious diseases.
- Maintaining high vaccination rates is critical for preventing severe rubella complications.
Abstract:
Rubella is usually encountered as a mild viral illness in children and complications are not common. We reported rubella encephalitis in the atypical course of rubella without rash in a 9-year-old boy. He was admitted with a headache, fever, loss of consciousness and bilateral retroauricular lymphadenopathy. The cerebrospinal fluid (CSF) examination showed lymphocytic pleocytosis, increased protein levels and a normal glucose value. Immunoglobulin (Ig) M antibodies against rubella virus were positive in CSF and serum. IgG antibody also became positive in his serum 3 weeks after his admittance. We emphasized that rubella may appear without any rash and cause encephalitis. In unvaccinated children, rubella should be considered in the differential diagnosis of encephalitis.
Related Concept Videos
Encephalitis l: Introduction
Encephalitis ll: Pathophysiology
Arboviral Encephalitis
Rabies
Viral Meningitis
Rocky Mountain Spotted Fever
