Head shaking and neck turning are often seen in chorea. Chorea involuntary movements of the face manifested as frowning, shaking the head and turning the neck, grinning and sticking out the tongue; limbs manifested as straightening and flexing, adduction and abduction, rotating forward and rotating backward and other non-rhythmic alternating movements, upper limbs glue lower limbs obviously. It is aggravated by nervousness and fatigue, and disappears during sleep. The following is a list of methods to check for head shaking and neck turning. 1, anti-streptococcal kinase test Beta-hemolytic streptococcus can produce streptokinase, this enzyme has antigenicity, can stimulate the body to produce anti-streptococcal kinase (antistreptokinase, ASK) antibodies. Principle of anti-streptococcal kinase test: EIA is a special reaction combining the specificity of antigen-antibody reaction and the efficient solubilization of enzyme. Neurological examination Neurological examination is to determine whether there is any damage to the nervous system and the location and extent of the damage, i.e. to solve the “localization” diagnosis of the lesion. The examination should be carried out in a certain order and in conjunction with the general physical examination. Usually, the cranial nerves are examined first, including their motor, sensory, reflex and vegetative functions; then the motor systems and reflexes of the upper and lower limbs are examined in turn, and finally the sensory and vegetative nervous systems are examined. The examination should also be focused on the history and initial observations, especially in the examination of critically ill and injured patients. In addition, cortical dysfunction, such as consciousness, aphasia, dysarthria, and anosognosia, also fall within the scope of the neurological examination.