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The normal human body temperature is often stated as 36.5–37.5 °C (97.7–99.5 °F). [8] [9] In adults a review of the literature has found a wider range of 33.2–38.2 °C (91.8–100.8 °F) for normal temperatures, depending on the gender and location measured. [14]
Adult and pediatric manifestations for the same disease may differ; for instance, in COVID-19, one metastudy describes 92.8% of adults versus 43.9% of children presenting with fever. [14] In addition, fever can result from a reaction to an incompatible blood product. [75]
A summary of the differences between hyperthermia, hypothermia, and fever. Hyperthermia: Characterized on the left. Normal body temperature (thermoregulatory set-point) is shown in green, while the hyperthermic temperature is shown in red. As can be seen, hyperthermia can be considered an increase above the thermoregulatory set-point.
In children, rubella normally causes symptoms that last two days and include: Rash begins on the face which spreads to the rest of the body. Low fever of less than 38.3 °C (100.9 °F). Posterior cervical lymphadenopathy. [14] In older children and adults, additional symptoms may be present, including [citation needed] Swollen glands
Fever of unknown origin (FUO) refers to a condition in which the patient has an elevated temperature for which no cause can be found despite investigations by one or more qualified physicians. [ 1 ] [ 2 ] [ 3 ] If the cause is found, it is usually a diagnosis of exclusion , eliminating all possibilities until only the correct explanation remains.
[54] [55] [56] Children have a larger surface area per unit mass, and other things being equal should have one more layer of clothing than adults in similar conditions, and the time they spend in cold environments should be limited. However, children are often more active than adults, and may generate more heat.
Allergic rhinitis; Other names: Hay fever, pollenosis: SEM Microscope image of Pollen grains from a variety of common plants: sunflower (Helianthus annuus), morning glory (Ipomoea purpurea), prairie hollyhock (Sidalcea malviflora), oriental lily (Lilium auratum), evening primrose (Oenothera fruticosa), and castor bean (Ricinus communis).
The live, weakened vaccine is generally not recommended in pregnant women, children less than two years old, adults older than 50, or people with a weakened immune system. [30] Depending on the type it can be injected into a muscle (intramuscular) , sprayed into the nose (intranasal), or injected into the middle layer of the skin (intradermal ...