Why have I had one-sided headache for 3 days?

This can be indicative of various underlying medical issues, specifically when you are experiencing fainting problems. Seek immediate medical attention immediately for a proper evaluation and diagnosis.

Your conditions, Polio Residual Paralysis and cerebral vascular accident (stroke) would generally be categorized as "Multiple Disabilities" rather than "Locomotor Disability." Multiple Disabilities involve coexisting impairments in different body systems, while Locomotor Disability typically refers to issues related to mobility. It's important to consult a medical professional for accurate classification.

These symptoms can be caused by several reasons like allergies, dehydration, lack of sleep, stress, medication side effects. Even medical conditions, such as thyroid problems, anemia, or diabetes could be the reason. Soo its better to get a medical checkup done to find out and get suitable treatment.

You find yourself to be mentally down as a result of the treatment, which was proton beam therapy for your brain tumor. This is a natural outcome because the treatment hurts the healthy brain tissue. Some usual symptoms are fatigue, memory problems, and a problem concentrating.  Make sure you rest, eat the right foods, and keep in contact with your healthcare team. Alongside counseling, look into this support program for a solution.

You may have a tension headache. This headache feels like a tight band around the head and can cause vomiting. Common causes for these headaches include stress and tension, poor sleeping habits, or eye strain from looking at screens too much. To alleviate your symptoms, you should take some non-prescription painkillers such as acetaminophen or ibuprofen. Additionally, get enough rest and drink plenty of water while trying relaxation methods like deep breathing exercises or light workouts. If they don’t go away or get worse it would be best if you visited your doctor so that he could give them proper attention.

I recommend taking the medication as prescribed to you by your doctor. But if you experience any side effects from it or want to go for some other treatment, you can talk to your neurologist. He will suggest some other treatments based on your condition like lifestyle changes, CBT or acupuncture etc. Also, follow-ups is must. 

If your daughter is experiencing severe headaches, blurred or double vision, vomiting, or blood clots coming from her nose, these are something to be seriously worried about. The cause of all these might be high blood pressure, a head injury, or even a blood clot in her brain. Take her to the hospital immediately. Call an ambulance or take her to the emergency department so that they can diagnose and treat her properly.