In people without other illness, a candida infection can be cured with skin ointment or medicine that can be swallowed. Skin medications can be bought over-the-counter without a doctor's prescription. In people who are already sick, candidiasis can become a very serious illness. It can cause abscess, thrombophlebitis, heart infection (endocarditis. It can cause infections of the eyes or other organs. Candida infection can get into the body through cuts in the skin.