You have tinnitus which is the ringing in the ear and you have chills with shivering too. Tinnitus is caused by many different things like loud noises or stress. The chills could be because of an infection. Get lots of rest, drink enough water, and if necessary go to a doctor for more help.  

Many people­ feel sudden warmth, calle­d hot flashes. These happe­n frequently for women, but me­n can get them too. Hormonal changes or re­actions cause hot flashes. Stress, caffe­ine, or alcohol may trigger them. Staying cool, avoiding spicy foods, and re­laxing can help manage hot flashes. If the­y continues being problematic, spe­ak to your doctor.

The answer to your question depends on the cause of the dural arteriovenous fistulae. If it is caused by a congenital abnormality, exercise may help reduce the symptoms, but it is unlikely to completely resolve the condition. If the cause is a tumor or an aneurysm, then exercise may help reduce the symptoms, but a more comprehensive treatment plan may be required. The cost of stereotactic radiation therapy varies depending on the institution providing the therapy. It is best to seek advice from a specialist to determine the best course of treatment.

Setting a proper sleep schedule and reducing screen time are good steps, but sometimes additional help is needed. Since the neurologist's treatment didn't suit you, I recommend visiting a sleep specialist. They can provide personalized advice and alternative treatments to improve your sleep.

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.