A headache after a few days of fever may be due to a cold that has not cleared up, or a neurological headache, or a headache due to glaucoma or sinusitis. 1. Colds do not heal headaches: colds can cause dizziness, headaches, weakness, this situation needs to take Nimesulide under the advice of a doctor. 2. Neurogenic headache: it is the most common type of headache, which is mainly caused by anxiety, tension and bad life habits. Currently, the main treatment is medication, taking benzodiazepines and vitamin B1 under the guidance of the doctor. 3. Headache due to glaucoma: It is due to the increase of intraocular pressure, which leads to the damage and inflammation of the optic nerve. If you have a headache, you should go to the hospital in time and use Trevoprost to lower the intraocular pressure, or if the intraocular pressure is very high, you can also undergo surgical treatment. 4. Headache caused by sinusitis: Sinusitis causes headache, and secretion related. Headache symptoms are mild, under the guidance of the doctor can choose to take oral rhinitis tablets or budesonide nasal spray to treat, more serious patients, need to do ct examination, to determine whether the need for surgical treatment. If you can’t get relief, please consult your doctor for treatment in time to avoid delaying your condition.