Reddit mentions of Sinus Rinse Adult Bottle Kit 8 Oz

I feel you, this is almost exactly my situation minus the basement and arthritis. The only thing you can really do is go to extraordinary lengths to keep the basement clean and allergen safe. If it is a large room, you might need another air purifier (make sure they're HEPA filters). Seal off your door with something like weather strips and floor draft blocker to keep the allergens out. If there are windows, look into what you can do to make sure they are air-tight as well. I have literally duct-taped the frames of my windows before when allergy season was peaking.

Running a humidifier and keeping the room at ~45% humidity also helps me, but you have to be careful as humidified/uncirculated air can cause mold growth. If the humidity is a problem, look into getting your own de-humidifier. Amazon has a really small one for ~$35 that might be better than nothing.

For the GERD, I've found that dietary changes are the only thing that really helps me. I'm taking prilosec right now and generally have to take a Tums in the evening, but staying away from fatty food is what helps me maintain the symptoms the most. I wish I could help more than that because I know a lot of this seems like common sense. But yeah, my symptoms only started improving when I made physical changes to my room: sealed the door, blocked the AC vent completely (something about it was actually triggering my asthma more when it would run), taped around the perimeter of my window frame except where I need to open it, and make sure to clean dust under my bed/around the room once a week.

Also, get a NetiPot or something equivalent and use distilled water to rinse your sinuses daily. It's imperative that you only use distilled water with the salt mixture packets the nasal rinse things come with. That has helped my allergies tremendously.

edit: this is the sinus rinse kit I got https://www.amazon.com/gp/product/B004H1RA6U/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Just get the pack of 50 salt packets and you're good to go. I believe they also sell a starter pack with the 50 salt packets included. I can't stress enough how much this has helped me personally with allergies.

I had sinus surgery and have struggled with chronic sinusitis.

Look into sinus rinse salts, such as those sold by Neilmed. Use this bottle not the weird "teapot one."

https://www.amazon.com/Sinus-Rinse-Adult-Bottle-Kit/dp/B004H1RA6U/ref=sr_1_1?keywords=neilmed+bottle&qid=1567204125&s=hpc&sr=1-1

When you're going to use it, make sure it is approximately body temperature first (immerse the fully prepared bottle in a larger glass that has hot water in it). You can use distilled water or just bottled water works fine for me. Really spray it in both nostrils with good force and tilt your head around afterward to drain everything. It's a really cheap natural way to keep your sinuses clear and feeling good. It's literally just salts so you can barely call it "medicine" and it's definitely not a drug. Good luck.