What Are Flu Symptoms and How Do They Affect the Body? 

Flu symptoms are severe enough to cause a person to feel unwell for over a week. They are more likely to be serious in certain groups, such as young children, elderly people, pregnant women, or those with existing illnesses, who are more vulnerable.

People often use “cold” and “flu” as if they are the same thing, but they are not. They are different illnesses, and they vary naturally in severity and symptoms. Recognising the difference between them will help you determine when you should go to the doctor.                                                                                   

This guide will look at the most common flu symptoms, the similarities between a cold and the flu, how to manage flu symptoms, and the process of recovery.

Types of Influenza

Influenza viruses, which cause the flu, are classified mainly into Influenza A and Influenza B. Both A and B cause annual epidemics of influenza, but Influenza A is more frequently associated with pandemics, whereas Influenza B more commonly causes outbreaks limited to humans and closer to local communities. Apart from this, both viruses show similar effects. Read our detailed guide on Influenza types (Influenza A & B) for a more comprehensive comparison of symptoms, transmission, and treatment across influenza types.

What Are Flu Symptoms

The flu symptoms are caused by the influenza virus. The flu virus enters the body and infects the nose, throat, and lungs. With the flu, there is usually a rapid onset of symptoms that appear 1 to 4 days after infection, as opposed to the common cold. The symptoms may be most severe in the first few days.

Common flu symptoms include:

• Fever or chills
• Cough
• Runny or blocked nose
• Muscle and joint aches
• Headache
• Fatigue, tiredness

Not all individuals will have the same symptoms or severity. It is affected by age, general health, and the strain of the influenza virus. Being aware of what to do if you have the flu will assist you in recovering from the symptoms and help to control the transmission of the flu.

Flu Symptoms vs Cold Symptoms

Although there are few similarities between influenza and the common cold, they are, of course, two completely separate illnesses caused by two different viruses. Having knowledge of the symptoms of the common cold and the flu will allow you to diagnose which type of illness you may have.

The major difference that is easily noticeable is the speed at which the symptoms show up. The symptoms of the flu appear very rapidly, while cold symptoms (such as a sore throat or a runny nose) may take a few days to develop. 

Due to the often similar nature of the symptoms between a cold and the flu, sometimes the two can be difficult to tell apart. It would be reasonable for the patient to visit a healthcare professional if their symptoms are already severe or if they are worried about associated complications.

Duration of Flu Symptoms:

The duration of symptoms in most healthy adults is generally 5–7 days, although the patient can take several weeks to recover as an individual. Fatigue is one of the symptoms that can sometimes last for a long time.

Ask your GP or other health professional if your symptoms are worse or getting worse or not getting better.

When Should a Doctor Be Seen?

Most people will recover without any incident, but there are some warning signs.

Admission to Accident and Emergency should be sought for the following: difficulty in breathing, ongoing severe chest pains, ongoing severe dehydration, or if there is deterioration of the symptoms rather than improvement. Advice should be sought if someone from a higher-risk group develops influenza.

The Role of the Flu Vaccine

The purpose of the flu vaccination is to prevent influenza and could also help in reducing the severity of the disease caused by the infection if contracted. The vaccines used to immunise populations against the influenza viruses are regularly adapted to ensure protection against the specific viruses most likely to be circulating.

Getting a flu shot does not mean that you won’t get the flu. It may reduce the risk of the condition getting severe.

Please speak to a healthcare specialist if you are not sure whether you should receive a vaccination.

Simple Ways to Manage Flu Symptoms

After you have been vaccinated against influenza, there are a few simple steps that you can take to help prevent yourself and others from spreading the disease, which include:

• Keeping your hands clean by washing them regularly and frequently.
• Keeping away from relatives and friends when you are suffering from influenza
• Providing good indoor ventilation.

Conclusion

The flu often comes on very quickly, and symptoms are usually much worse than a standard cold. Symptoms tend to be a high temperature, a sore throat, headaches, tiredness, aches, pains, and a cough. 

Certain groups of people are more at risk of suffering complications and should seek medical advice if concerned or if the symptoms change. 

Nevertheless, once you learn how to identify the difference, then you can change your mode of action, reduce the impact of the symptoms on yourself and those around you, or otherwise identify the perfect moment when you will need a more complete treatment.

Frequently Asked Questions