Hi E.,
I had a very very similar problem and it was resolved. (I'm assuming your problem is not a disciplinary issue. If that's the case then other advice may be needed. My daughter was a sweet child who even though she was not always obedient, I saw that she really wanted to be.) It took me thinking outside the box and our lives changed so much for the better. If you're willing to do that then there's hope. Hear me out!
First of all, a 4 year old is a very small person that is exposed to many more things than an adult is. Her heart rate is faster. She breathes faster. She is also closer to the floor because of her height. Chemical toxins and outgassing is traditionally heavier than air so she is inhaling much more than you are. When you go to the grocery store and walk down the cleaner aisle, you can smell the chemicals. The bottles are not broken. Those are poisons that leach through the bottles. Do you get lightheaded in the aisle? Do you get lightheaded when you clean? There are alternatives.
I completely detoxified my house and my daughter's behavior and her learning corrected itself almost overnight. I changed cleaning products, bath and body products, and we stopped eating as many processed foods. This will not only help your daughter but it will also help your FRAZZLED state! This can be a costly endeavor, but if you want to try this, I can help you do it for no more or maybe even less than you are paying now for these type items.
My headaches are gone, my husband has lost a ton of weight and kept it off, my oldest had a medical condition stop progressing that the doctors said would only get worse and my Lydia's behavior and her learning has far exceeded grade level. My girls are now 12 and 15 and I wish I had known all this when they were small. Lydia was 7 when I figured this out so I went through years of struggle before then.
Please feel free to email me or call me on my cell if you like. My number is ###-###-####. I would love to help!
M. Howe