Understanding Fever: Warning Signs, and When to Get Tested

Feeling symptoms like sweating, high body temperature, headaches, some kind of physical discomfort and more? All these signs might be an indication of fever.

Fever is not always something to be concerned about. Usually, it is the body’s natural response to fight off infections and bacteria. In most cases, having a mild fever can be resolved with rest, proper hydration and basic home care. However, some fevers may be a sign of a serious illness and require immediate medical attention. But how will you know when the fever is mild or severe, and when to seek medical help or get tested? Here we will explore the warning signs of fever and when you should get tested. But before that, let’s start with understanding what is considered a fever.

When is fever considered?

A fever occurs when the normal body temperature rises above the normal range. The normal body temperature can be around 37°C (98.6°F), though variations are common. Generally recommended by doctors are:

• Mild Fever: Approx 38°C or 100.4°F
• Moderate Fever: More than 39° or 102.2°F
• High Fever: Above 40°C or 104°F

Warning signs of fever that you should never ignore

Very High fever (104°F / 40°C or Higher)

If you are feeling feverish, the first step is to check your body temperature to see if it is 104°F/40 °C or higher. Parents need to seek urgent care if their child is facing issues such as breathing difficulty, poor feeding, seizures, dehydration, extreme sleepiness or persistent vomiting. In adults, the alarming signs can be weakness, confusion, falls, breathing difficulty and reduced appetite. Whether the fever is high in adults or children, prompt medical evaluation is required. Your doctor may also suggest a fever health package first to determine the cause. 

Chest Pain

Feeling feverish or chest pain could be a sign of a heart or lung infection, or another serious health condition, such as pneumonia or heart inflammation. You need to consult your doctor if you experience symptoms such as weakness, sweating, difficulty breathing, or a rapid heartbeat.

Persistent vomiting

Fever with nausea? If the fever is accompanied by diarrhoea or vomiting, it can worsen the dehydration and affect the proper intake of nutrition and medication. Immediate medical action is required when vomiting continues for many hours, weakness or confusion arises, or you feel severe abdominal pain.

Severe dehydration

A high fever also indicates the fluid loss through vomiting, sweating or diarrhoea. Common signs of severe dehydration that you should not ignore are: dizziness, very dry mouth, rapid heartbeat, sunken eyes, less need to urinate and extreme weakness.

Fever with skin rash

It is common to have rashes during a fever. They can be the result of viral infections like measles or chickenpox, or of bacterial infections like meningitis. Special medical attention is required if the rash spreads rapidly, appears in blue or dark colour, accompanied by breathing difficulty and neck stiffness.

Fever lasting more than a few days

If a fever lasts longer than 3 days without showing any signs, it could indicate a chronic infection or an inflammatory disease. The persistent fever should be considered serious and requires medical evaluation if it keeps returning, shows no improvement even with treatment, lasts up to 5 days, and continues to worsen. In such cases, opting for a doctor-recommended fever health checkup can help to determine underlying causes with a range of tests.

Serious conditions that lead to high fever

There are certain medical conditions, too, that can cause high fever in emergencies, such as:

• Dengue diagnosis causes high fever, severe body pain, weakness, low platelet counts, and bleeding symptoms.
• Pneumonia often leads to cough, chest pain, fatigue or breathing difficulty.
• Having TB (tuberculosis) may also lead to persistent fever, weight loss, chronic cough and night sweats.
• Severe UTI infection can also be the result of Fever, back pain, burning urination and even confusion in elderly adults.
• Sepsis: A fever becomes dangerous when it is the result of a life-threatening reaction called Sepsis and requires immediate medical intervention. Its symptoms include: Confusion, low blood pressure, extreme weakness, and rapid breathing.

When to seek medical attention?

If you are experiencing any of the above signs of fever, it is time to consult your doctor or seek help from a medical professional.

• Infants and young Children: If your baby is 3 months old or has a fever of 100.4°F or higher, seek medical attention immediately, as young children are at higher risk of infection. If the fever lasts more than 24 hours in a child between 3 months and 3 years, or if your child refuses to eat or drink. 

• Adults: Individuals over 65 years with existing health conditions like diabetes, heart disease, or immune disorders. Younger individuals should also seek medical attention if they have a persistent fever lasting 2-3 days, especially when accompanied by symptoms like sensitivity to light, an unusual skin rash, a stiff neck pain, chest pain, severe headache, or other concerning signs.

• Pregnant Women: If you are pregnant, seeking a medical professional is all you need, as delaying can risk the health of the mother and baby.

When to Get Tested?

While mild fever often resolves on its own, persistent or high-grade fever should never be ignored. Seeking timely medical expert advice is recommended if it lasts more than 2-3 days and is further accompanied by chest pain, confusion, headache, breathing difficulty, or persistent vomiting. Based on your symptoms, your doctor may recommend the Fever Health Package- a comprehensive guide to gather insights into your health and plan proper medical treatment.

FAQs

1. Are there five stages of fever?

The five patterns of fever are: intermittent, remittent, continuous, hectic and relapsing.

2. Why you should never ignore a fever?

Ignoring a fever puts you at high risk of brain damage, dehydration, spread of infection, and more.

3. What should you not do during a fever?

Try to avoid layering yourself with a pile of clothing and blankets. Also, do not ignore if it remains persistent.

4. What tests are done for fever?

Doctors or healthcare professionals usually recommend a fever health checkup with various test parameters to identify the cause and plan treatment.

Disclaimer: This information is intended for general awareness only and should not replace medical advise. Please consult a qualified healthcare professional for personalised guidance.

Sources: 

https://www.health.harvard.edu/diseases-and-conditions/treating-fever-in-adults

https://www.moh.gov.sg/seeking-healthcare/getting-medical-help/conditions/fever/

https://www.nhsinform.scot/illnesses-and-conditions/infections-and-poisoning/fever-in-adults/