Nervous System is the master piece of this textbook. This chapter covers approx. 30% of the whole book. Nervous system (Central, peripheral and autonomic) is the most complex system of our body. But, dear readers, nothing to worry now!! This chapter has been designed in such an extraordinary way that reading and understanding it is very-very easy now. Each and every line of this chapter has been written keeping in mind the interest of the readers. It contains 66 tables and 44 figures!! It also includes X-ray, CT scans and MRI. The specialities of this chapter are: 1. History taking in common symptoms of nervous system disorders. 2. Excellent description of Headache-causes, types and characteristics. 3. Examination of Motor system- Pyramidal and extra-pyramidal tracts. 4. Interpretation of Higher Functions and mental state examinations. 5. Evaluation of speech. 6. Clinical Examination of Cranial nerves and their related disorders. 7. Exclusive chart teaching how to test the Muscle strength of upper and lower limbs (single chart extended over 5 pages). 8. Peripheral and Autonomic neuropathy. 9. Nerve injury. 10. Evaluation of Reflexes (extended over 13 pages). 11. Exclusive evaluation of Gait abnormalities. 12. Sensory system evaluation. 13. Various Myopathies. 14. Examination of Unconscious patients (one of the toughest jobs in clinical medicine). 15. Autonomic nervous system.