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Holding your breath for a long time can sometimes make you dizzy or suffocate, nevertheless, it is improbable for you to suffer from a permanent brain injury. Your brain which requires oxygen is doing well because you have been receiving good oxygen levels. If you're feeling worried, try some relaxation techniques like deep breathing or talking to someone you trust. 

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.

These symptoms together with unintentional loss of weight are worrisome. This could happen for many reasons including pulled muscles or problems with the cervical spine but it could also be something more serious so I would advise seeking medical attention soon so you can find out what is wrong before starting any treatment plan.

Tinnitus is not a disease but rather a symptom of something else. It may be due to circumstances such as exposure to loud noises, ear infections, or even stress. Unfortunately, no medication is specifically designed to cure tinnitus. Nevertheless, coping with stress, limiting exposure to loud sounds, and applying sound therapy can reduce the symptoms.

As of now there's no permanent cure for Parkinson's disease..But there aare also various treatments to imporve the quality of life

Staying awake all night and sleeping during the day can disrupt your natural sleep-wake cycle, leading to potential health issues like fatigue, poor concentration, and weakened immunity. It is best to maintain a regular sleep schedule. Please consult a sleep specialist or a general physician to discuss your sleep patterns and get personalized advice.

When symptoms disappear, it indicates that the treatment is working. For nerve problems, the patient should gradually change medication. The body needs time, usually a few months, to adjust to a new dose before considering reducing it. If you rush this process, symptoms may return.

Headaches can arise in many ways, for example, stress, lack of sleep, or even looking at screens for too long can cause them. It's better to lie in a peaceful place, drink a lot of plain water, and abstain from excessive screen time. If the pain persists, you need to go to a doctor and get a thorough checkup done.