Headache without fever is not necessarily a coronavirus infection. Because headache without fever is not the main feature of coronavirus, and you cannot judge whether you are infected with coronavirus by the symptoms, headache without fever may be related to cervical spondylosis, cerebrovascular disease, trigeminal neuralgia and so on. 1. Cervical spondylosis: It mainly manifests as head and neck pain, stiffness and discomfort, and can also be accompanied by dizziness, vertigo, headache and other symptoms. Most of them are caused by bad life habits, excessive cervical spine movement caused by degeneration and other reasons. 2. Cerebrovascular diseases: Cerebrovascular diseases such as cerebral hemorrhage, hypertension, encephalopathy, cerebral blood supply insufficiency, etc., may cause headache but not fever. Usually it can be accompanied by dizziness, nausea, vomiting and other symptoms. 3. Trigeminal neuralgia: It is mainly characterized by sudden severe pain in the head, which lasts for 1 to 2 minutes and then stops. The number of attacks can range from several times a day to several times a minute. The pain can be tear-like, electric shock-like, lightning-like, needle-like and so on. It is recommended that the patient go to the hospital in time to improve the relevant examination, nucleic acid test, and clarify the cause of the cause of treatment.