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Published on: Jan 20, 2023
1 minute read
By: Secondmedic Expert

Your Ultimate Guide To Understanding Normal Body Temperature: Causes, Symptoms, And Prevention

Body temperature is a vital sign that indicates the body's ability to produce and dissipate heat. A normal body temperature for a healthy adult is around 98.6°F (37°C), but it can vary slightly depending on factors such as time of day, activity level, and individual differences. In this guide, we will discuss the causes, symptoms, and prevention of abnormal body temperature.

Causes of abnormal body temperature:

Fever: The most common cause of abnormal body temperature is a fever, which is a sign of an infection or inflammation in the body. A fever is defined as a body temperature above 100.4°F (38°C).
Hypothermia: A low body temperature, known as hypothermia, can occur in cold environments or due to certain medical conditions. A body temperature below 95°F (35°C) is considered hypothermia.
Hyperthyroidism: An overactive thyroid gland can cause the body to produce too much heat, leading to a high body temperature.
Medications: Certain medications, such as antipsychotics and antidepressants, can affect body temperature regulation.
Trauma: Serious injury or surgery can cause the body to produce too much heat as a response to the trauma.

Symptoms of abnormal body temperature:

Fever: Symptoms of a fever can include sweating, chills, headache, muscle aches, and fatigue.
Hypothermia: Symptoms of hypothermia include shivering, numbness, confusion, and slow breathing.
Hyperthyroidism: Symptoms of hyperthyroidism include weight loss, rapid heartbeat, and sweating.

Prevention of abnormal body temperature:

Fever: The best way to prevent a fever is to practice good hygiene, such as washing your hands frequently, and avoiding close contact with people who are sick.
Hypothermia: To prevent hypothermia, it is important to dress warmly in cold weather, and avoid staying out in the cold for prolonged periods of time.
Hyperthyroidism: To prevent hyperthyroidism, it is important to manage any underlying medical conditions that can cause an overactive thyroid gland.
Medications: If you are taking medications that can affect body temperature regulation, it is important to follow your doctor's instructions and monitor your body temperature regularly.
Trauma: To prevent abnormal body temperature due to trauma, it is important to take steps to prevent injuries and accidents.

In conclusion, abnormal body temperature can be caused by fever, hypothermia, hyperthyroidism, medications, and trauma. It is important to be aware of the symptoms and take the necessary steps to prevent abnormal body temperature. If you have a fever or other symptoms of abnormal body temperature, it is important to seek medical attention.

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Seasonal Flu vs Covid-19: 2025 Comparison

As we step into 2025, seasonal flu and Covid-19 continue to be common health concerns, especially during winter and changing weather. Though both illnesses share some symptoms, they differ in causes, severity, treatment, and prevention. Understanding these differences is important to stay informed, protect yourself, and take the right steps when feeling sick.

Let’s take a closer look at Seasonal flu vs Covid-19: 2025 comparison and understand how they impact our health today.

What is Seasonal Flu?

Seasonal flu, also called influenza, is a viral infection that spreads every year, mainly in winter. It is caused by influenza viruses, especially Influenza A and B. The virus affects the nose, throat, and sometimes the lungs.

Common Symptoms of Flu:

Fever and chills
Cough and sore throat
Runny or stuffy nose
Muscle aches
Fatigue
Headache

Most people recover from the flu within a few days to a week. However, the elderly, young children, and those with weak immunity may develop serious complications like pneumonia.

What is Covid-19?

Covid-19 is a respiratory illness caused by the SARS-CoV-2 virus. It was first discovered in 2019 and caused a global pandemic. Over the years, new variants have emerged, and now in 2025, the virus continues to spread in milder or seasonal waves.

Common Symptoms of Covid-19 in 2025:

Fever
Dry cough
Tiredness
Loss of taste or smell
Sore throat
Headache
Breathing difficulties (in severe cases)

Some people also experience stomach issues, body aches, or skin rashes. The symptoms may vary depending on the variant and the individual's immunity.

Seasonal Flu vs Covid-19: Key Differences

Feature	Seasonal Flu	Covid-19
Virus Type	Influenza A/B	SARS-CoV-2
Incubation Period	1–4 days	2–14 days
Symptoms Onset	Sudden	Gradual or sudden
Loss of Taste/Smell	Rare	Common (especially in early variants)
Severity	Mild to moderate	Mild to severe, depending on variant
Spread	Through droplets, surface contact	Droplets, aerosols, and close contact
Vaccine	Annual flu shot	Booster updated for current variants
Treatment	Antiviral drugs, home care	Antivirals, supportive care, and rest

Which is More Dangerous in 2025?

Both illnesses can be serious, but Covid-19 still poses higher risks, especially for the elderly and those with chronic health problems. Covid-19 can lead to severe lung infections, long-term symptoms (Long Covid), and hospitalization in some cases. Seasonal flu is usually less severe but still dangerous for certain groups.

In 2025, thanks to vaccines and public health awareness, both illnesses are more manageable than before. However, ignoring symptoms or delaying care can make things worse.

Prevention Tips for Both Illnesses

Whether it’s flu or Covid-19, prevention is always better than cure. Here are a few simple ways to stay protected:

1. Get Vaccinated

Take the yearly flu shot, especially before the winter season.
Get updated Covid-19 boosters as recommended.

2. Maintain Hygiene

Wash hands often with soap and water.
Use hand sanitizers when outside.
Avoid touching your face, nose, or mouth with unwashed hands.

3. Wear a Mask in Crowded Places

Masks help prevent the spread of both viruses, especially in public transport, hospitals, and indoor events.

4. Stay Home if You Feel Sick

Rest, hydrate, and avoid contact with others until you recover.

5. Boost Your Immunity

Eat a balanced diet, get enough sleep, exercise, and manage stress.

When to See a Doctor?

You should consult a doctor if:

You have high fever for more than 2 days
Difficulty breathing or chest pain
Severe fatigue or confusion
Dehydration (dry mouth, dizziness)
Underlying conditions like diabetes or asthma

Doctors may recommend a test to confirm whether it’s flu or Covid-19. Based on results, the treatment and isolation guidelines may vary.

Testing in 2025: Easier and Faster

One positive update in 2025 is the availability of dual testing kits that detect both flu and Covid-19 in one test. These are available at clinics, hospitals, and even home-use versions for early diagnosis. Early testing helps in starting treatment quickly and prevents spread to others.

Treatment and Recovery

For Flu:

Rest and plenty of fluids
Antiviral medicines (like oseltamivir) if prescribed
Pain relievers for body aches and fever

For Covid-19:

Isolation if symptoms are present
Antiviral medicines for high-risk groups
Oxygen support in serious cases
Monitoring of oxygen levels using a pulse oximeter

In both cases, self-care is key to faster recovery.

Mental Health During Seasonal Illnesses

Falling sick, especially in a post-pandemic world, can cause anxiety. It’s important to:

Stay calm
Avoid panic scrolling online
Get facts from reliable sources like WHO or your local health department
Talk to a counselor if feeling overwhelmed

Taking care of your mental well-being helps in faster healing and better decision-making.

Conclusion: Stay Alert, Stay Healthy

In the Seasonal flu vs Covid-19: 2025 comparison, we see that while both illnesses affect the respiratory system and share common symptoms, Covid-19 still carries more complications. However, with awareness, vaccination, hygiene, and timely testing, we can reduce risks and protect our families.

Don’t take chances this season. Be aware, take precautions, and if in doubt, consult your doctor.
Let’s stay ahead of seasonal infections by understanding the clear differences through this Seasonal flu vs Covid-19: 2025 comparison.

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