Common Causes of Pediatric Respiratory Infections

Pediatric Respiratory Infections

What is a Pediatric Respiratory Infection?

A pediatric respiratory infection is an infection that is located in the upper or lower respiratory tract of an infant. The infection can cause a runny nose, nasal congestion, cough, scratchy throat, and irritability. Children are especially susceptible to respiratory infections because their immune systems are not fully developed and because they often do not practice good hygiene.

Common Causes of Pediatric Respiratory Infections

  • Viruses
  • Rhinovirus
  • Respiratory Syncytial Virus (RSV)
  • Influenza
  • Parainfluenza
  • Bacteria


On average, children develop six respiratory infections a year that have been caused by viruses. There are several viruses that can cause respiratory infections.


Rhinoviruses are the typical cause behind the common cold. These viruses spread through contact and by breathing in viral agents. Colds caused by rhinoviruses may cause children to have a sore throat, cough, runny nose and muscle aches, as well as a minor fever.

Respiratory Syncytial Virus (RSV)

RSV also produces symptoms that are similar to the common cold, but it can cause severe complications in infants. It can cause coughing and sneezing, as well as wheezing in young children. Infants may be irritable and lethargic at the onset of the virus, and they may have trouble breathing. It can develop into bronchitis or pneumonia.

Board-certified emergency care center physicians at ER of Texas Emergency Room can test and diagnose RSV as well as multiple other respiratory infections. In addition, if the child develops Bronchiolitis or Pneumonia, we can diagnose and provide treatment at our facilities.

Images courtesy of the Centers for Disease Control and Prevention (CDC)


There are several types of influenza viruses, and they are very contagious. The flu can cause symptoms that are more severe than those associated with the common cold, including a high fever, chills, cough, nausea, ear pain, weakness and diarrhea. It can also develop into pneumonia, which is particularly dangerous in infants or children with weakened immune systems.


Parainfluenza viruses are often the cause of croup, which occurs when the windpipe or voice box becomes inflamed. These viruses can make breathing difficult, and they can lead to pneumonia, bronchitis and other lower respiratory tract infections. Symptoms include a barking cough, wheezing, hoarseness, difficulty breathing and a runny nose.


A bacterial infection may occur if a viral infection progresses and moves into the lower respiratory tract. Bacterial infections may cause pneumonia, and they may be severe enough that they require hospitalization. Antibiotics are often used to treat these illnesses.

When to Call a Doctor for Pediatric Respiratory Infections

In many cases, your child’s immune system will overcome a viral respiratory infection on its own, but there are times when you will need to seek medical assistance for pediatric respiratory infections. If your child has had a cold for over two weeks, you should call or visit your nearby emergency room immediately if your child has a high fever or is dehydrated, and call a doctor as soon as you notice that he is wheezing or has a severe cough.

Call or Visit Closest Emergency Room Immediately When

Your child is

  • Struggling to breathe
  • Lips or nails are turning blue
  • Breathing unusually fast
  • Fever is above 102 degrees

Your Infant’s fever is over 100.4 degrees

It may seem as though your child is always suffering from a cough or runny nose, but you should monitor these to make sure that they don’t progress into a serious pediatric respiratory infection.

If you think that your child needs prompt medical attention for a respiratory infection, please visit one of our emergency rooms in Dallas-Fort Worth area. Our ERs are open 24/7 to help you and your little one feel better.