| Obligatory | Must not donate if: a) Recent onset and not fully investigated. b) Secondary to malignancy or degenerative neurological disease. |
| Discretionary | Eyes: If related to malignancy, see Malignancy. |
| See if Relevant | Malignancy Neurosurgery |
| Reason for Change | The 'Discretionary' entry for 'Eyes' (malignancy) has changed. |