发烧是流感疾病的常见副作用。当体温暂时上升时，它会发生。一种发热通常是你的标志immune systemis busy fighting an infection or other illness.

在婴儿和幼儿甚至轻微发烧可能是严重疾病的标志。在成年人中，发烧通常不会严重或危及生命。

However, sometimes a fever in adults can be a warning signal that something is not right. A high or persistent fever might be a sign of a serious health condition.

发烧通常是温度的短期上升，有助于您的身体摆脱疾病。当你的免疫系统制造更多时，发烧始于发烧white blood cellsto fight an infection. The increase in white blood cells triggers your brain to heat your body up.

这导致发烧。作为回应，通过缩回血液流向皮肤和收缩肌肉，您的身体试图冷却。这让你颤抖，可能会导致肌肉疼痛。

Your normalbody temperature范围从97°F至99°F（36.1°C至37.2°C）。如果您的温度高于此，您可能会发烧。

如果其体温增加到100.4°F（38°C），则成年人通常发烧。这被称为低级发烧。当您的体温为103°F（39.4°C）或更高时，会发生高品位发烧。

大多数FEVERS通常在1到3天后自行消失。一种persistent或复发发烧可能持续或继续返回最多14天。

即使只是轻微的发烧，持续时间比正常长的发烧可能是严重的。这是因为复发发烧可能是更严重的感染或健康状况的标志。

常见的发烧symptomsin adults include:

  • 出汗
  • chills (shivering)
  • headaches
  • muscle pain
  • loss of appetite
  • fatigue
  • 弱点

如果您的温度为103°F（39.4°C）或更高，则立即致电您的医生。如果您有任何一种以上的发烧，请获得医疗帮助。让您的医生知道您的症状是否会恶化或如果您有任何新症状。

Serious symptoms

如果你有可能是严重疾病的迹象：

  • 严重的头痛
  • 头晕
  • sensitivity to bright light
  • 颈部或颈部疼痛
  • skin rash
  • difficulty breathing
  • frequent vomiting
  • dehydration
  • 肚子痛
  • muscle cramps
  • confusion
  • seizures

Other signs that a fever may be serious are:

  • 小便时疼痛
  • not urinating enough
  • 经过暗尿
  • 通过尿液闻起来不好

If you have serious fever symptoms, let your doctor know if you have recently traveled to a different country or attended an event that had lot of people. This may help your doctor find out the cause.

Common causes of a fever in adults are:

  • viral infection (like the flu or a cold)
  • bacterial infection
  • fungal infection
  • 食物中毒
  • heat exhaustion
  • 严重的晒伤
  • 炎症（从类风湿性关节炎等条件）
  • 一个肿瘤
  • 血块

Some adults may have a higher risk of getting a fever. If you have a chronic health condition or have been treated for a severe illness, you may be more likely to get a serious fever.

Let your doctor know about any fever symptoms if you have:

一些药物和治疗也会导致严重发烧，其中包括：

一种发热is not normally harmful on its own. Most fevers go away within a few hours to days as your body defeats an infection.

通过这些家庭流感帮助自己感觉更好补救措施:

  • 通过饮用大量流体保持水分，例如：
    • 水
    • 果汁
    • 汤
    • 肉汤
  • eat light foods that are easy on the stomach
  • 休息
  • use a cool compress, like a damp towel
  • take a warm sponge bath
  • dress in light, comfortable clothing
  • turn down the temperature in your room

Over-the-counter medications can help ease your fever and symptoms, like headaches and muscle pain:

  • 布洛芬（Advil，Motrin）
  • 乙酰氨基酚（泰诺）
  • naproxen (Aleve, Naprosyn)

You may need treatment from your doctor for more serious causes of a fever. The treatment depends on the cause. Your doctor may prescribe medications to treat serious infections:

发烧可能是严重疾病的迹象。高烧也会导致严重的副作用。

Emergency Symptoms

Get emergency medical attention by going to the ER or calling an ambulance if you have any of these symptoms:

  • 癫痫发作或抽搐
  • 晕倒或丧失意识
  • confusion
  • hallucinations
  • severe headache pain
  • stiff or painful neck
  • difficulty breathing
  • 荨麻疹或皮疹
  • swelling in any part of the body

成年人的发烧通常是无害的。这是一个迹象，你的身体正在处理感染或其他疾病。在某些情况下，高或持久的发烧可能是严重疾病的标志。您可能需要紧急的医疗。

Do not ignore a fever. Get plenty of rest and fluids to help your body heal. See your doctor if you have a fever that lasts longer than 3 days or if you have other severe symptoms.

如果您有慢性病或已经治疗严重疾病，请让您的医生知道您是否有任何一种发烧。