Hello, Both headaches and nosebleeds are very common, and they are usually not a cause for concern. When they occur at the same time, you might think that they are linked. In many cases, headache and nosebleed at the same time is a coincidence, and in others, everyday factors such a the common cold or seasonal allergies can cause both symptoms. A nosebleed can occur if a person has a broken or burst blood vessels inside the nose. Blood vessels of this area are sensitive and may break due to skin dryness or injury. You don t need to do any test if it is manageable at home, for the treatment base you should: - Keeping a headache dairy to identify patterns and triggers - Changing environmental factors, such as bright lights - Adopting healthy lifestyle factors, such as exercise and good sleeping habits - Practicing relaxation techniques - Sit up to reduce your nasal blood pressure and minimise bleeding - Pinch both your nostrils shut to put pressure on your nose - During dry season you can use vaporizers in your home, to keep it moist - You may also wish to take an OTC allergy drug after prescription to prevent headache and nasal symptoms if you think this is seasonal allergy Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Ishu Bishnoi, Neurologist, Surgical