Health

3. a disease in which the protective covering of nerve fibers in the brain and spinal cord are destroyed
4. a condition in which recurring tiredness makes it difficult for people to function in normal ways
8. an inherited condition in which blood does not clot normally
10. a major seizure in which a person may have convulsions
12. recurring or persistent conditions
15. a condition in which joints become deformed and may lose function
16. a condition in which connective tissue becomes inflamed
17. a brain disorder that causes muscle tremors, stiffness, and weakness
20. a disorder in which abnormal electrical activity in the brain causes a temporary loss of control of the mind and body
21. a genetic disorder in which a child is born with an extra chromosome in each cell

1. a disorder of the nervous system that interferes with muscle coordination
2. severe head pain that is caused by dilation of blood vessels in the brain
5. the wearing down of the moving parts of joints
6. an open sore on the lining of the esophagus, stomach, or first part of the small intestine
7. an inherited blood disease in which the red blood cells carry less oxygen
9. a genetic disease in which the muscles progressively deteriorate
11. a painful inflammation in the joints
13. a condition in which large amounts of abnormally thick mucus are produced, particularly in the lungs and pancreas
14. a chronic sleep disorder in which a people are excessively sleepy even after adequate nighttime sleep
18. a period in which a person loses control over mind and body
19. a small seizure in which a person loses consciousness for a few seconds