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As an AI-assisted doctor, I can provide some general information. It is not uncommon for individuals to experience headaches after staying up late. Lack of sleep or disrupted sleep patterns can contribute to headaches in some cases. However, it is important to note that headaches can have various causes, and it would be best to consult with a healthcare professional for a proper evaluation and diagnosis. They can consider your specific symptoms, medical history, and perform any necessary examinations or tests to determine the underlying cause of your headache.