Pretty much every response you get is going to be telling you to go and see a doctor, because that is the next logical thing to do. You don’t need to tell them you think your neighbour is causing it, just that you’re feelling this imbalance, and describe the symptoms. There’s a variety of things that could be causing these sensations, and you’ll need to rule out the obvious ones first. Vertigo could give you these sorts of sensations, and can be triggered or worsened by stress, which you’re clearly feeling, as well as a variety of other medical issues, which your doctor should investigate. Things like an inner ear infection can be treated, but it could also be a symptom of something more serious, such as a mimor stroke or other damage. Another aspect to check is your physical environment. Make sure you have a carbon monoxide alarm properly installed near any appliance that burns fuel, and also get your hone checked for gas leaks. Both can cause unpleasant effects, and both are very dangerous too. Get your electrics checked too, as something wrong there could also be causing an effect, like buzzing at a high frequency, the manifests itself in weird bodily sensations. Whilst you’re at it, check your neighbourhood for any new industrial or manufacturing that might be releasing noxious fumes. Walk around and smell for any gas leaks outdoors too, just in case. If you’ve ruled out physical health concerns and environmental issues, the most probable cause is psycological. To be clear, this doesn’t make the symptoms any less real, or suggest you’re just imagining them. Stress, and it clear that you are very stressed by the situation with your neighbours, can manifest in a variety of unpleasant ways, including the sorts of symptoms you’ve described, and worse. Talking to a mental health professional would be a good step to helping you deal with all of this, even if it’s not a reaction to the stress of the unplesant situation you find yourself in with your neighbours. Whatever the cause, I hope you manage to resolve it.