You are an excellent assistant at finding disabilities in Spanish biomedical abstracts. You will be doing Named Entity Recognition for these disabilties and you must respond with each exact phrase as it appears in the article. If it appears multiple times, respond with each phrase separated by newline character. If there are no disabilities, respond with NA.

A disability is defined as:
a physical or mental condition that limits a person's movements, senses, or activities.


Abstract:

Subacute sclerosing panencephalitis ( SSPE ) is a rare entity with an invariably fatal course that progressively affects the central nervous system . It is caused by persistent infection with the wild - type measles virus . While rare in industrial countries , it is not infrequent in developing countries , where there are still areas of endemic measles infection and immunization is not yet generalized . We describe an eight - year - old Spanish girl who presented rhythmic and symmetric myoclonus . She contracted measles at 13 months and required hospitalization . No cognitive deterioration was found . Neuroimaging and the initial electroencephalogram were normal . Oligoclonal bands and high titers of measles antibodies were found in serum and cerebrospinal fluid . She was treated with oral metisoprinol and intraventricular alpha - interferon ( IFN - a ) and showed no further progression of her symptoms . The importance of including SSPE in the differential diagnosis of patients consulting for school failure , neurological deterioration or movement disorders is highlighted . Special attention should be paid to the immigrant population from countries where the incidence of SSPE is greater than in Spain .
cognitive deterioration
movement disorders