Brief Answer: Viral infection or migraine Detailed Answer: Hello, Thanks for trusting us with your health concern. Having continuous headache for last four days without any history of head injury may be due to- 1. Anxiety/ tension- try to relax yourself, decrease alcohol or caffeine intake, take a mild sedative for a good and restful sleep, do mild aerobics, etc. 2. Eyestrain-Straining your eyes to focus on things can be a big factor of what causes headaches. You need to get your eyes examined for refraction. 3.Depression/ migraine/ High blood pressure. 4. Generalized viral infection with electrolyte imbalance All the above causes need to be excluded after a direct examination and investigations by a physician. If the headache is not getting relieved with mild pain killers then you can try some herbal preparations for the same. Do take a bland diet, with no milk, black tea with lemon, and yogurt rice, and ripe bananas for a couple of days. Drink plenty of fluids to avoid dehydration. Get your stool examined and if it indicates infection see your doctor for a course of antibiotics. You can meanwhile take Lomotil twice a day along with the diet I have suggested. Please feel free to discuss further. I will be glad to answer the follow up queries that you have. Wishing you good health. Regards. Dr. Rakhi Tayal. For future query, you can directly approach me through my profile URL http://bit.ly/Dr-Rakhi-Tayal

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