What’s the difference between a cold and the flu?
The common cold and the flu may seem similar at first. They’re both respiratory illnesses and can cause similar symptoms. But different viruses cause these two conditions.
Your symptoms can help you tell the difference between them.
Both a cold and the flu share a few common symptoms. People with either illness often experience:
As a rule, flu symptoms are more severe than cold symptoms.
Another distinct difference between the two is how serious they are. Colds rarely cause other health conditions or problems. But the flu can lead to:
If your symptoms are severe, you may want to confirm either a cold or flu diagnosis. Your doctor will run tests that can help determine what’s behind your symptoms.
If your doctor diagnoses a cold, you’ll only need to treat your symptoms until the virus has run its course. These treatments can include:
For the flu, taking flu medicine early in the virus’ cycle may help reduce severity of the illness and shorten the time that you’re sick. Rest and hydration are also beneficial for people with the flu.
Much like the common cold, the flu often just needs time to work its way through your body.
What are the symptoms of the flu?
Here are some of the common symptoms of the flu:
Fever
The flu almost always causes an increase in your body temperature. This is also known as a fever.
Most flu-related fevers range from a low-grade fever around 100°F (37.8°C) to as high as 104°F (40°C).
Although alarming, it’s not uncommon for young children to have higher fevers than adults. If you suspect your child has the flu, see their doctor.
You may feel “feverish” when you have an elevated temperature. Signs include chills, sweats, or being cold despite your body’s high temperature. Most fevers last for less than 1 week, usually around 3 to 4 days.
Cough
A dry, persistent cough is common with the flu. The cough may worsen, becoming uncomfortable and painful.
You may sometimes experience shortness of breath or chest discomfort during this time. Many flu-related coughs can last for about 2 weeks.
Muscle aches
Flu-related muscle pains are most common in your neck, back, arms, and legs. They can often be severe, making it difficult to move even when trying to perform basic tasks.
Headache
Your first symptom of the flu may be a severe headache. Sometimes symptoms, including light and sound sensitivity, go along with your headache.
Fatigue
Feeling tired is a not-so-obvious symptom of the flu. Feeling generally unwell can be a sign of many conditions. These feelings of tiredness and fatigue may come on fast and be difficult to overcome.
Flu shot: Know the facts
Influenza is a serious virus that leads to many illnesses each year. You don’t have to be young or have a compromised immune system to get gravely ill from the flu. Healthy people can get sick from the flu and spread it to friends and family.
In some cases, the flu can even be deadly. Flu-related deaths are most common in people ages 65 and older, but can be seen in children and young adults.
The best and most efficient way to avoid the flu and prevent spreading it is to get a flu vaccination.
The flu vaccine is available in the following forms:
The more people that get vaccinated against the flu, the less the flu can spread. It also helps with herd immunity, helping to protect those who can’t get the vaccine for medical reasons.
Vaccination can also help lessen the severity of the illness if you do end up getting the flu.
How does the flu shot work?
To make the vaccine, scientists select the strains of the flu virus that research suggests will be the most common in the coming flu season. Millions of vaccines with those strains are produced and distributed.
Once you receive the vaccine, your body begins producing antibodies against those strains of the virus. These antibodies provide protection against the virus.
If you come into contact with the flu virus at a later point, you can avoid contracting it.
You may get sick if you end up coming into contact with a different strain of the virus. But the symptoms will be less severe because you had the vaccination.
Side effects of the flu shot.
Many people report avoiding the flu vaccine each year for fear that it will make them sick. It’s important to understand that the flu vaccine can’t cause you to develop the flu.
You aren’t going to become sick because you received the vaccine. Flu vaccines contain dead flu virus. These strains aren’t strong enough to cause an illness.
Like other shots, you may experience some side effects from the flu shot. These side effects are often mild and only last a short period of time. The side effects of a shot outweigh the possible symptoms of developing the flu later.
The most common side effects of the flu shot include:
Any side effects that do occur often last only a day or two. Many people won’t experience any side effects at all.
On rare occasions, some people may have a serious allergic reaction to the vaccination. If you’ve had an allergic reaction to any vaccine or medication before, talk with your doctor.