The winter season traditionally brings a surge of viral infections, and the hardest part is understanding what exactly is happening to your body. Flu, COVID-19, and common cold infections share many symptoms, but there are also key differences that help you seek timely medical care and avoid complications.
Main Symptoms of the Common Cold (ARI)
Acute respiratory infections (ARI) usually refer to mild seasonal viral illnesses.
Typical symptoms:
- moderate fever (37.2–38.0°C)
- runny or congested nose
- scratchy or mildly sore throat
- mild cough
- fatigue without sudden deterioration
Key feature: symptoms develop gradually and usually resolve within 5–7 days.
How Flu Presents
Flu starts suddenly and aggressively. Your condition can worsen within just a few hours.
Common symptoms:
- high fever (38.5–40°C)
- severe muscle and joint pain
- strong headache
- dry cough
- feeling of exhaustion, complete lack of energy
Important: nasal congestion and runny nose are often absent or very mild in flu.
Flu is more likely to cause complications such as pneumonia, sinusitis, or worsening of chronic conditions.
COVID-19 Symptoms in Winter
Omicron and its subvariants present with distinct features:
- dry or productive cough
- fever (usually 37.5–38.5°C)
- sore throat (sometimes severe)
- pronounced weakness
- occasional loss of smell or taste
- chest pain or shortness of breath
COVID-19 hallmark: prolonged fatigue that may last even after recovery.
When You Must Consult a Doctor?
Seek medical help immediately if you experience:
- fever above 38.5°C lasting more than 2–3 days
- sudden difficulty breathing
- severe or worsening cough
- chest pain
- no improvement after 3–4 days
- extreme weakness, inability to eat or drink
Why Self-Medication Is Dangerous?
Incorrect use of antivirals or antibiotics can be harmful and prolong the illness. A precise diagnosis requires symptom evaluation, medical history, and, when needed, laboratory tests.
If you notice symptoms of a cold, flu, or COVID-19, do not risk your health.
Doctors at the REMED Telemedicine Center will help identify your condition, choose the right treatment, and provide recommendations for quick recovery.
Contact REMED doctors online at any time convenient for you.