{"id":50801,"date":"2025-04-25T21:36:47","date_gmt":"2025-04-26T01:36:47","guid":{"rendered":"https:\/\/www.hancockhealth.org\/mayo-health-library\/fever-treatment-quick-guide-to-treating-a-fever\/"},"modified":"2026-02-04T11:53:25","modified_gmt":"2026-02-04T16:53:25","slug":"fever-treatment-quick-guide-to-treating-a-fever","status":"publish","type":"mayo","link":"https:\/\/hancockhealth.apgar.digital\/ja\/mayo-health-library\/fever-treatment-quick-guide-to-treating-a-fever\/","title":{"rendered":"Fever treatment: Quick guide to treating a fever"},"content":{"rendered":"
\n

A fever is a common sign of illness. But that doesn’t always mean it’s a bad thing. In fact, fevers may help fight infections. So should you treat a fever or let the fever run its course? Here’s help knowing what to do.<\/p>\n

These suggestions are for people who don’t have serious health issues. That means they don’t have a suppressed immune system, aren’t taking chemotherapy medicines and haven’t recently had surgery.<\/p>\n

Listed in the table below are temperatures taken with rectal and oral thermometers. These thermometers give the best measure of core body temperature.<\/p>\n

Other types of thermometers include ear thermometers, called tympanic membrane thermometers, and forehead thermometers, called temporal artery thermometers. They’re easy to use, but they don’t measure temperature as well.<\/p>\n\n\n\n\n\n\n\n\n
Infants and toddlers<\/caption>\n
\u5e74<\/th>\nTemperature<\/th>\nWhat to do<\/th>\n<\/tr>\n<\/thead>\n
0-3 months<\/td>\n100.4 F (38 C) or higher taken rectally<\/td>\nCall your child’s healthcare professional, even if your child doesn’t have other symptoms.<\/span><\/td>\n<\/tr>\n
3-6 months<\/td>\nUp to 102 F (38.9 C) taken rectally<\/td>\nHave your child rest and drink fluids. Your child doesn’t need medicine. Call your child’s healthcare professional if your child seems more cranky than usual, has little energy or isn’t comfortable.<\/span><\/td>\n<\/tr>\n
3-6 months<\/td>\nAbove 102 F (38.9 C) taken rectally<\/td>\nCall your child’s healthcare professional, who may suggest that you bring your child in for an exam.<\/span><\/td>\n<\/tr>\n
6-24 months<\/td>\nAbove 102 F (38.9 C) taken rectally<\/td>\nGive your child acetaminophen (Tylenol, others). If your child is age 6 months or older, ibuprofen (Advil, Motrin, others) is OK too. Read the label to be sure to give the right dose. Don’t wake your child to give fever medicine. Don’t give aspirin to an infant or toddler. Acetaminophen and ibuprofen don’t have aspirin in them. Call your child’s healthcare professional if the fever doesn’t respond to the medicine or lasts longer than one day.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n
Children<\/caption>\n
\u5e74<\/th>\nTemperature<\/th>\nWhat to do<\/th>\n<\/tr>\n<\/thead>\n
2-17 years<\/td>\nUp to 102 F (38.9 C) taken rectally for children ages 2-3, or taken orally for children older than 3<\/span><\/td>\nHave your child rest and drink fluids. Your child doesn’t need medicine. Call your child’s healthcare professional if your child seems very cranky, has little energy or complains of great discomfort.<\/span><\/td>\n<\/tr>\n
2-17 years<\/td>\nAbove 102 F (38.9 C) taken rectally for children ages <\/span><\/td>\nFor discomfort, give your child acetaminophen (Tylenol, others) or ibuprofen (Advil, Motrin, others). Read the label to be sure to give the right dose. Be careful not to give your child more than one medicine that has acetaminophen, such as some cough and cold medicines. Don’t give aspirin to children or teenagers. Don’t wake your child to give medicine for fever. Call your child’s healthcare professional if the fever doesn’t respond to the medicine or lasts longer than three days.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n
Adults<\/caption>\n
\u5e74<\/th>\nTemperature<\/th>\nWhat to do<\/th>\n<\/tr>\n<\/thead>\n
18 years and up<\/td>\nUp to 102 F (38.9 C) taken orally<\/td>\nRest and drink fluids. You don’t need medicine. Call your healthcare professional if there’s also a bad headache, stiff neck, shortness of breath or other symptoms.<\/span><\/td>\n<\/tr>\n
18 years and up<\/td>\nAbove 102 F (38.9 C) taken orally<\/td>\nFor discomfort, take acetaminophen (Tylenol, others), ibuprofen (Advil, Motrin IB, others) or aspirin. Read the label to be sure to take the right dose. Be careful not to take more than one medicine with acetaminophen, such as some cough and cold medicines. Call your healthcare professional if the fever doesn’t respond to the medicine, stays at 103 F (39.4 C) or higher or lasts longer than three days.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>","protected":false},"excerpt":{"rendered":"

Should you treat a fever or let it run its course? Here’s help knowing what to do.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","tags":[1685,1682,1684],"class_list":["post-50801","mayo","type-mayo","status-publish","hentry","tag-condition","tag-person-group-concept","tag-theme-of-focus","content_type-articles"],"acf":[],"yoast_head":"\nFever treatment: Quick guide to treating a fever - Hancock Health<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fever treatment: Quick guide to treating a fever - Hancock Health\" \/>\n<meta property=\"og:description\" content=\"Should you treat a fever or let it run its course? 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