Neuro diagnostic tests are done when a patient's disease or condition is believed to be situated in the focal sensory system (mind and spinal line). Indications of sensory system issue incorporate the accompanying: cerebral pains, Dizziness, Hearing, and vision changes, Numbness, and shivering, Seizures, Strokes, and Weakness. Diagnostic tests are CT Scan, MRI Scan, PET Scan, Electroencephalogram (EEG), Electromyography (EMG) etc. Exploration into medicines for health issues of the CNS made great walks in the previous number of decades, yet helpful alternatives are constrained for some patients with CNS disorder. Nanotechnology has risen as an animation and promising new methods for treating neurological disorder, with the opportunity to on a very basic level replace the way we approach CNS-focused on therapeutics. Few therapeutic agents readily traverse the Blood-brain barrier to reach the brain or spinal cord, including most small molecule drugs and the vast majority of large molecules such as proteins. Several research groups are exploiting intrinsic Blood-brain barrier transport mechanisms, such as molecular Trojan horses, and exploring technologies, such as chemical modifications and physical disruption, to test delivery of therapeutics to the Central Nervous System.