Brain abscessBrain metastasesCluster headacheDiabetic/peripheral neuropathyEncephalitisEssential tremorGuillain-Barre syndromeMigraineMotor neurone diseaseMultiple sclerosisMyasthenia gravisParkinson’s diseaseRadiculopathiesRaised intracranial pressureRamsay Hunt syndromeSpinal cord compression and cauda equina syndromeTemporal arteritisTension headacheTrigeminal neuralgiaWernicke’s encephalopathy