2.7. Nervous system
| SSP | 96 | abnormal sense of balance, falls |
| SSP | 97 | abnormal gait |
| SSP | 98 | abnormal involuntary movements, tremor, tic, lack of coordination |
| SSP | 99 | disorders of speech or language |
| SSP | 100 | dizziness, vertigo |
| SSP | 101 | headache |
| SSP | 102 | memory disturbance, cognitive impairment |
| SSP | 103 | paresis, paralysis |
| SSP | 104 | sensory loss, changes in various forms of sensation |
| SSP | 105 | twitches, convulsion, seizure |