Common Illnesses in Children: When Should Your Child See a Doctor?

Returning to school means spending more time in classrooms, playgrounds, buses, and other shared spaces. This can increase children’s exposure to the viruses and bacteria that cause coughs, colds, sore throats, stomach illnesses, and other infections.

Many common illnesses in children improve with rest, fluids, and supportive care at home. A medical assessment may be appropriate when symptoms are severe, continue longer than expected, or affect a child’s breathing, hydration, or alertness.

Knowing which symptoms to watch for can help parents and caregivers decide whether to monitor a child at home, arrange a doctor’s appointment, or seek emergency care. North East Medical Clinic provides primary care and walk-in services for eligible non-emergency health concerns in Northeast Calgary.

Why Do Children Get Sick More Often During the School Year?

Children regularly encounter new germs when they attend school or daycare. Younger children may also still be developing habits such as washing their hands properly, covering coughs, and avoiding touching their faces.

Respiratory viruses can spread through droplets, close contact, and contaminated surfaces. Gastrointestinal infections may spread when children touch contaminated objects or do not wash their hands properly after using the washroom.

Having several respiratory infections in a year can be common, especially among preschool-aged children. The frequency and severity of illness can vary based on a child’s age, general health, vaccination history, and exposure to other people.

Common Illnesses in Children During the Back-to-School Season

The symptoms of childhood infections often overlap. A physician may need to assess your child to determine the likely cause and whether testing, treatment, or follow-up is appropriate.

Colds and Respiratory Infections

Colds are among the most common illnesses in children. Symptoms may include:

• Runny or stuffy nose
• Sneezing
• Coughing
• Mild fever
• Sore throat
• Reduced energy or appetite

Most uncomplicated colds gradually improve with supportive care. Arrange a medical assessment if your child’s cough is severe, causes choking or vomiting, lasts longer than expected, or occurs with wheezing or difficulty breathing.

Influenza and Flu-Like Illnesses

Influenza can cause more intense symptoms than a typical cold. Possible symptoms include:

• Sudden fever or chills
• Muscle aches
• Headache
• Dry cough
• Significant tiredness
• Reduced appetite

Babies and children with certain chronic medical conditions may have a higher risk of complications. Contact a healthcare provider if your child’s symptoms are worsening, breathing becomes difficult, or a fever continues for more than three days.

Sore Throat and Strep Throat

A sore throat may be caused by a virus, post-nasal drainage, or a bacterial infection such as group A streptococcus. Symptoms alone may not reliably distinguish a viral sore throat from strep throat.

Consider seeing a doctor if your child has:

• A severe or persistent sore throat
• Difficulty swallowing
• Fever with swollen neck glands
• A rash
• Ear pain
• Symptoms that are getting worse instead of improving

A healthcare professional can determine whether testing is appropriate. Antibiotics treat certain bacterial infections but do not work against viral illnesses.

Ear Pain and Ear Infections

Ear pain may develop during or after a cold or respiratory infection. Younger children may pull at an ear, cry more than usual, sleep poorly, or have difficulty feeding.

A doctor should assess persistent or significant ear pain, drainage from the ear, or ear symptoms accompanied by fever. An examination is usually needed to determine whether the discomfort is caused by an infection or another condition.

Vomiting and Diarrhea

Stomach infections can spread quickly through schools, daycares, and households. The main concern for children experiencing vomiting or diarrhea is dehydration.

Contact a healthcare provider if your child:

• Cannot keep fluids down
• Refuses to drink
• Is urinating much less than usual
• Has persistent or worsening abdominal pain
• Has blood or black material in their stool
• Has vomiting or diarrhea that continues longer than expected

Dark green vomit, severe dehydration, unusual sleepiness, or difficulty waking requires urgent medical attention. Alberta guidance recommends contacting a doctor, pediatrician, or Health Link at 811 when vomiting or diarrhea lasts longer than two days.

Pink Eye

Pink eye, also called conjunctivitis, may cause redness, irritation, tearing, or discharge from one or both eyes. It can have several causes, including viruses, bacteria, allergies, and irritants.

Arrange an assessment if your child has eye pain, sensitivity to light, changes in vision, significant swelling, an eye injury, or symptoms that are becoming worse. A healthcare professional can help determine the likely cause and whether treatment is required.

When Can a Child Usually Be Monitored at Home?

Some common illnesses in children may be monitored at home when the child:

• Is alert and interacting normally
• Is breathing comfortably
• Can drink and keep fluids down
• Is urinating regularly
• Has manageable discomfort
• Appears to be gradually improving

Encourage rest and offer fluids frequently. Saline nose drops may help relieve nasal congestion.

Speak with a doctor or pharmacist before giving your child medication, particularly if your child is young, takes other medicines, or has an ongoing health condition. The Canadian Paediatric Society advises against giving over-the-counter cough and cold medicines to children younger than six years.

Parents should also check product ingredients carefully. Some products contain the same active ingredient, which can lead to an accidental overdose if they are used together.

When Should Your Child See a Doctor?

Book an appointment or seek medical advice if your child:

• Has a fever lasting longer than 72 hours
• Has an earache or persistent sore throat
• Has a cough that is severe, causes choking or vomiting, or does not improve
• Is unusually sleepy, irritable, or difficult to comfort
• Is not drinking well
• Is urinating less frequently than usual
• Has ongoing vomiting or diarrhea
• Has pain that persists or becomes worse
• Improves and then becomes noticeably unwell again
• Has symptoms that concern you, even if they are not listed above

Children with weakened immune systems, chronic medical conditions, or a history of serious illness may require an earlier assessment. Follow any illness-management plan provided by your child’s healthcare team.

For non-emergency childhood health concerns, learn more about Pediatric Care in Calgary . Pediatric services are provided according to clinical need, age-appropriate assessment, physician availability, and appropriateness.

Fever in Babies Requires Extra Caution

A fever in a young baby should be taken seriously.

Seek prompt medical advice if a baby younger than six months develops a fever. A baby three months of age or younger with a rectal temperature of 38°C or higher needs urgent medical assessment. Do not wait for other symptoms to appear.

Temperature readings can vary depending on how the temperature is measured. If you are unsure about the result or your baby appears unwell, contact a healthcare professional or call Health Link at 811.

When Is a Childhood Illness an Emergency?

Call 911 or go to the nearest emergency department if your child:

• Is struggling to breathe
• Cannot speak, cry, drink, or eat because of breathing difficulty
• Has blue or grey lips or skin
• Is very difficult to wake, confused, or not responding normally
• Has a seizure
• Has a severe allergic reaction, including swelling or breathing difficulty
• Shows signs of severe dehydration
• Has a stiff neck with confusion or unusual drowsiness
• Has swallowed a poisonous substance, battery, magnet, or another dangerous object

Signs of breathing difficulty may include very rapid breathing, nostril flaring, skin pulling in around the ribs or neck, or a child appearing exhausted from the effort of breathing.

North East Medical Clinic does not provide emergency services.

Can a Walk-In Clinic Assess a Sick Child?

A walk-in clinic may be appropriate for non-life-threatening symptoms that require a medical assessment but are not emergencies. These may include:

• Cold or flu symptoms
• Persistent cough
• Sore throat
• Ear pain
• Fever
• Mild rashes
• Vomiting or diarrhea without severe dehydration

Families can review the clinic’s walk-in medical services in Calgary NE before visiting. Walk-in access depends on physician availability, clinical priority, and whether the concern is appropriate for a walk-in setting.

Call the clinic to confirm current availability. A walk-in clinic should not be used instead of emergency care for severe or potentially life-threatening symptoms.

How Can Parents Help Reduce Back-to-School Illnesses?

Not every infection can be prevented, but families can take practical steps to reduce transmission:

• Keep children home when they are unwell
• Encourage frequent handwashing with soap and water
• Teach children to cover coughs and sneezes
• Avoid sharing drink containers, utensils, and personal items
• Clean frequently touched household surfaces
• Follow Alberta’s recommended immunization schedule
• Encourage adequate sleep, regular meals, and physical activity

Children should return to school according to their school’s illness policy and any instructions provided by a healthcare professional.

This article provides general educational information and does not replace medical advice, diagnosis, or treatment. Contact a qualified healthcare professional about symptoms affecting your child.