Nasal congestion, runny nose and sneezing are common in common cold or influenza, or may not be caused by cold. 1. Common cold: Common cold is usually acute in onset, with symptoms such as runny nose, sneezing, nasal congestion, etc. Meanwhile, it may be associated with sore throat, cough, chills, fatigue, headache, muscle aches and pains, and even low-grade fever. 2. Influenza: Influenza mostly occurs in winter and spring when influenza is highly prevalent, and may have symptoms such as running nose, sneezing, nasal congestion, etc. The symptoms are relatively mild. However, the systemic symptoms are heavy, high fever is easy to appear, and the symptoms of headache and muscle pain may be more obvious. 3. Other diseases that are not colds: for example, allergic rhinitis can be characterized by recurrent symptoms such as running nose, sneezing and nasal congestion, which can be easily triggered by inhaling pollen and animal dander, and aggravated at night or in the early morning. To summarize, if the symptoms of nasal congestion, runny nose and sneezing do not get better, it is necessary to consult a doctor in time, complete the relevant examinations, clarify the cause of the disease, and follow the doctor’s instructions for treatment, so as to avoid delaying the condition.