Changing eye sizes can be caused by several factors, including nerve involvement from the syndrome. Some interventions may be used to improve your eye's looks or function, like for example vision therapy or aesthetic procedures. An appointment with an eye doctor who can evaluate your situation and prescribe appropriate cures specific to your condition is vital. 

The most common reasons for this are stress, lack of sleep, and eye strain. Try to relax, get enough sleep, and consider using cold packs on your forehead. If it doesn’t improve, it’s best to see a doctor for further evaluation.

For some people, taking 4500 mg of methylcobalamin every day can be dangerous. If you take too much methylcobalamin, you might get an upset stomach, diarrhea, or a rash. Talk to your doctor if you feel unwell. They might change the amount you take or give you another kind of treatment. 

Sometimes people feel panicky, with symptoms like chest tightness, shaking in the arms and legs, and blurred vision. This is known as a panic attack, often triggered by stress, anxiety, or fear. When this happens, try to breathe slowly and deeply, focusing on calming yourself. 

While headaches can have various causes, including migraines, tension headaches, or sinus problems, it's important to rule out any underlying conditions. Consult a neurologist..; they may order additional tests or imaging if needed to determine the cause of your headaches.

Your friend could be having a panic attack. A state where the person has rapid breathing, cold hands and feet, sweaty palms, and feeling unable to move is the most common one during a panic attack. The reasons may be different but the stress or anxiety stage is often the cause. Advise your friend to breathe slowly and deeply to stay calm and composed. Offer them strong reassurance and be a steady presence to help them through it.

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.