Headache near eye/ear usually due to sinuses/eye strain. Stress, allergies, infections can trigger.OTC painkillers, rest, hydration can alleviate. In chronic cases, consult doctor. Avoid triggers, maintain healthy lifestyle. 

It seems like you might have systemic hypertension—this can lead to symptoms such as pain in the hands or feet, blurred vision, or more phlegm. These are all signs of high blood pressure. You need to check your blood pressure regularly and do what your doctor says to keep it under control. Changing your lifestyle by eating well-balanced meals, getting regular exercise, and dealing with stress can make things better for you.

You have had a headache on one side of your head for about 3 days. That may be a migraine. Migraines are sharp pains in the head that happen on one side of the head after nausea or sensitivity to light. Saridon might alleviate the pain for a while, however, it is essential to find out about the causes of your migraines.  Notice any symptoms you have and whatever triggers lead up to your headaches. Avoiding heiks like stress, lack of sleep, favorite foods, or loud noises may help you stop migraines. Should headaches continue or deteriorate, a doctor is the right person to consult.

As your symptoms indicate, you may be suffering from a migraine or tension headache. But one should not exclude the possibility of serious conditions. I suggest consulting a neurologist for further detailed diagnosis. While you wait, work on reducing your stress and have a good sleep at night. Recall that your health should be considered first and you might need medical attention if the situation requires so.

Spine tumour leading to paraplegia is a disease that requires specialist care. It is best to work with a neurologist or spine specialist who will evaluate your situation and advise you of any possible treatment alternatives. Recovery, that is to walk again is dependent upon the tumour type and extent of spinal cord damage.

It seems like you might be having tension headaches. These usually cause aching at the back of the head and make your neck feel stiff. Another symptom is always feeling tired and wanting to sleep. Ensure that you rest well, manage stress and maintain a good posture habit. In case the problem persists then I would advise you see a doctor who will give further guidance after examining you.

Your problem seems to point that your sleep and your focus are getting affected by your case. It may be due to your sleep pattern or stress. You should just adopt some healthy habits such as following a consistent sleep schedule, exercise daily, and keep away from electronic devices before going to bed. In order to develop better concentration usage of small study sessions and break will be the answer. If this problem still exists, seeing a physician or a mental health professional might be a good option.