The Effect of Most Antibiotics on Birth Control. A 2011 Harvard study4 looked at oral birth control failure rates between females who took antibiotics in the four weeks before conception and those who did not. The study included more than 43,000 females taking antibiotics and oral contraception simultaneously.
Myxoid cysts are common and are more common in women and the elderly. These lesions occur more frequently on the fingers than on the toes. The most common location for myxoid cysts is the fingers. They are usually found near the base of the nail, slightly off to one side or the other.
Small fluid-filled blisters called vesicles appear on the fingers, hands, and feet. They are most common along the edges of the fingers, toes, palms, and soles. These blisters can be very itchy. They also cause scaly patches of skin that flake or get red, cracked, and painful.