2. Lycée Des Arts 2013 - 2014 Grade 10 A

3. The nervous system is made up of the central nervous system and the peripheral nervous system. Multiple Sclerosis

4. Definition : Multiple sclerosis or MS is a disease that affects the brain and spinal cord, resulting in loss of muscle control, vision, balance, and sensation With MS, the nerves of the brain and spinal cord are damaged by one's own immune system. Thus, the condition is called an autoimmune disease.

5. CAUSES No one is sure what causes the body's immune system to go awry in multiple sclerosis. Some scientists believe that it is a combination of genetics and something in the environment to which the person was exposed to early in life. Myelin can be compared to the insulation on electrical wires. When myelin is damaged, the messages that travel along that nerve may be slowed or blocked.

7. Signs and symptoms: 1.Partial or complete loss of central vision, usually in one eye, often with pain during eye movement (optic neuritis) 2.Double vision or blurring of vision 3.Tingling or pain in parts of your body 4.Electric-shock sensations that occur with certain head movements 5.Tremor, lack of coordination or unsteady gait 6.Slurred speech 7.Fatigue: you may feel tired even after a good night’s sleep 8.Dizziness Diplopia

8. Complications: LoL, What’s my name ? Muscle stiffness or spasms Paralysis, most typically in the legs Mental changes, such as forgetfulness or difficulties concentrating Depression Epilepsy Difficulty swallowing Difficulty thinking

9.  Epidemiology and MS statistics:

10. o Physical therapy o Muscle relaxants o Medications to reduce fatigue Treatments:

11. Prognosis: The average life expectancy is 30 years from onset, which is 5 to 10 years lower than that of unaffected people. Almost 40% of people with MS reach the seventh decade of life

12. Animated by: Abbas Kanso PS:we are Illuminati, join us. Sara Termos Jana Haidar Hadi Bazzi Abbas Kanso BY : برعاية علي حمادة

13. Thanks To every person who contributed in this work: Computer’s Teacher : Rasha Abou Assly Biology Teachers : Abir Bitar – Siham Jibaii