If it's just a common cold, then the symptoms are relatively mild, consisting only of some sneezing, a runny nose, and nasal congestion. However, if bacterial or viral infections are involved, the symptoms become more severe. A common cold is self-limiting and usually resolves itself in about seven days without the need for medical intervention. If a viral infection is causing the cold, the onset of symptoms is typically sudden and may include fever, cough, expectoration, headache, body aches, and fatigue. It is also important to note that in such cases, treatment should be carried out under the guidance of a doctor and may involve taking medication. Physically cooling methods or fever-reducing drugs may be used to reduce fever. Bacterial infections can also cause symptoms like cough, expectoration, and fever, and it is advised to actively treat these symptoms appropriately.