The headache and confusion he is experiencing might be due to the hematoma, which is a blood clot in his brain. The air in the burr holes is concerning. The brain cannot tolerate excess blood, as it may cause problems. At least the pain medicine is helping him. His recovery process might be a bit lengthy. It's important to stay in constant communication with the doctors at the hospital.

You probably had a severe headache and nausea but now you are better due to Disprin. Today, you have a feeling of dizziness and fever-like symptoms. These could be the signs of a migraine. Migraines can make you experience headaches, vomiting, dizziness, and the like, having light or sound be a trigger. Do not forget to lay down, drink water, and stay away from stress and some foods to keep it from happening.

You might have something we call a vasovagal syncope. Some of your blood flow may change for a short time when you sneeze this is what causes the feeling of faintness and may interfere with your ability to move your hands and legs for a while. Try sitting down or lying if you feel like sneezing. Also, make sure to drink enough water and have sufficient rest always. If it happens frequently or becomes more severe, see a doctor.

Your uncle may suffer from a disorder known as Post-Traumatic Amnesia (PTA) after an injury to the head. Memory loss and aggressive behavior are pervasive symptoms. It is because the main point gets violated, hence, it can be the cause of behavioral changes. Rest, avoiding stress, and patience are necessary for your uncle's recovery. 

As per the complaints, this is a case of Sinusitis.

If you have sinusitis, the doctor may be able to recommend additional medications to relieve your symptoms, such as steroid nasal sprays or drops to reduce sinus swelling.

antihistamines - if your symptoms are caused by an allergy

Antibiotics - if you have a bacterial infection and are severely sick or at risk of consequences, antibiotics may be prescribed (but antibiotics are often not needed, as sinusitis is usually caused by a virus)

Symptoms such as fever, headache, throwing up, diarrhea, and nervousness could point towards a stomach bug or food poisoning. These might also leave you feeling light-headed or generally unwell. Make sure to drink enough water, get plenty of rest, and stick with bland foods if this is what you’re going through. If your condition doesn’t improve or gets worse than before, please see a doctor so they can examine you properly and give appropriate treatment options. 

It may sound like you have a condition known as sinusitis. Sinuses get inflamed when spaces around the nose are filled with too much mucus due to colds, flu, allergies, or other conditions. This can lead to pain in your head especially when you lean forward or cough/sneeze; it also causes swelling in the eyes, nausea, and vomiting. To feel better try using warm packs on your face and take pain relievers that can be bought over the counter. Keep yourself well hydrated and rest enough too. In case these signs don't go away, you should see a doctor who will check them out further and treat them accordingly.