[Neurological involvement following triple virus vaccine]. / Implicación neurológica tras immunización con vacuna triple vírica.

INTRODUCTION: Prophylactic immunization against measles, rubella and mumps is carried out using a trivalent vaccine. The second dose is recommended at 11-12 years-old. Neurological complications have been described after vaccination for measles and rubella. All cases occurred several days after vaccination. CLINICAL CASES: We describe four girls aged between 10 and 11 years old who were vaccinated on the same day. Almost immediately they complained of symptoms in the vaccinated arm. These were pain, paresthesia, coldness, pallor and sweating of the hand. On the following days there was loss of strength and alterations in sensation. All laboratory, radiological, neurophysiological and psychiatric studies were normal. Immunological study showed changes in the immunohumeral response to the vaccine. Complete recovery was made. CONCLUSIONS: The different types of post-vaccination complications described to date are reviewed, together with conditions showing features such as those described, particularly the reflex sympathetic syndrome. Possible reasons for the poor immunohumoral response to the vaccine in these patients are discussed.