This happened 26 years ago and after visits to ear specialists and sinus doctor we pinpointed it to an allergy to beer, my favorite alcoholic drink. Then I quit drinking alcohol completely. A month ago, the vertigo returned. When I get it, it comes on fast, causing me to vomit, An MRI on my brain shows no abnormalities, bleeding or lesions. An ear, nose and throat specialist saw no infection in my outer ear. He did prescribe a decongestant and antihistamine. Sometimes, the foods I eat causes my constant ear ringing to become worse and my sinuses to become dry. My left ear feels plugged. Any idea on the cause?. My left ear ringing and feeling of fullness are constant. I cannot use nose sprays because I have glaucoma. The vertigo last for about four hours and subsides when I take medication, yet after it, I have diarrhea and gas.