Hydrogen peroxide can bleach hair and clothing. Iodine can burn the skin if left on in full strength and is poisonous if swallowed. Iodine can also cause an allergy. Stop using it if a rash occurs. Thermometer - It is used to measure the body's temperature.
Fever is used to help diagnose illness.
The best places to measure the body's temperature are in the mouth and rectum. Oral thermometers should be placed under the tongue with mouth closed for two to three minutes. The mercury in thermometers is poisonous. Small children should not use them if it is possible they may bite down on the thermometer and break it. Rectal thermometers should be used with a lubricant and inserted about one inch into the rectum for about two minutes.