1. All About Disease Unit 5-4 Notes Mr. Hefti – Pulaski Biology

2. 1. What is disease? O change interfering w/ body’s appearance, structure or function O disrupts homeostasis O Pathology: study of diseases

3. 2. Disease types O Acute diseases: come on suddenly, ≤ than a few weeks O Ex. a cold O Chronic diseases: months or years; may recur O Ex. arthritis

4. 3. Effects of disease O The course of a disease depends on: O Overall health O Treatment received

5. 3. O Every disease has effects called symptoms O Ex. O Fever O Swelling O Pain O Fatigue O Dizziness O Rashes

6. 3. O Symptoms offer clues used for a diagnosis O Medical exams may be needed O Urine samples O CT scans O Blood tests O X rays O MRI

7. 4. Classification of disease O Infectious diseases can spread / caused by microbes O Ex. O Malaria O Chicken pox O Athlete’s foot O Bronchitis O Rabies

8. 4. O Noninfectious diseases don’t spread O Ex. O Emphysema O Diabetes O Lupus O Huntington’s Disease O Broken bone