The main diseases that cause headache and back pain are as follows: 1. Influenza, most of which are caused by viral infections, with systemic symptoms as the main cause and local symptoms are mild, such as headache, body aches, weakness, poor spirit, fever, runny nose, nasal congestion and other symptoms are generally mild, so you can drink more water and take antiviral oral solution or acetaminophen treatment. 2. Cervical spine disease, cervical spine disease causing neck Muscle strain can appear back pain and other symptoms, can also cause dizziness, headache, neck discomfort, limb numbness and other symptoms, if the above symptoms can be checked to confirm the diagnosis of cervical spine nuclear magnetic. Avoid being sedentary and exercise properly.3. Overexertion can also cause headache and back muscle pain, so pay attention to rest and avoid getting cold.