The headache caused by a cold is mainly due to the following reasons: First, it is caused by bacterial or viral infection. The inflammatory reaction stimulates the nerves in the head, causing headache. Second, when catching a cold, it is often accompanied by nasal congestion, runny nose, congestion and edema of nasal mucosa, and nasal obstruction of ventilation, which leads to hypoxia of the body, and can also cause spasm and contraction of cerebral vessels, leading to headache. In addition, when you have a cold, you often have a fever. When you have a fever, the cerebral blood vessels will expand, which will increase the intracranial pressure, and it is also easy to cause headaches. So pay attention to rest and drink more water when you have a cold and headache. If there is a low fever, it should be treated with antipyretic treatment and oral cold granules.
