Most medications do not prevent you from donating blood. Common medications such as those used to control blood pressure, birth control pills and over-the-counter medications do not affect your eligibility. If you have recently taken antibiotics, you must have completed the course prior to donating.
Yes, a tooth infection can cause a headache. Also, be aware that certain sinus conditions can mask as tooth problems.
Full Answer. A bad tooth usually begins as a cavity. Bacteria in the cavity can lead to infections. Some symptoms of a tooth infection can be pain, face or mouth inflammation and pus formation at the tooth site. It also can cause nausea, fevers, vomiting and chills due to high fevers.