After having strep throat and taking an antibiotic, a few days later the mouth is covered with slimy white patches. What would this person have?...

Thrush-

Thrush is an
infection of the mouth caused by the href="http://www.medicinenet.com/script/main/art.asp?articlekey=10314">candida
fungus, also known as yeast. Candida infection is not limited to the mouth; it can occur
in other parts of the body as well, causing href="http://www.medicinenet.com/script/main/art.asp?articlekey=7335">diaper
rash in infants or href="http://www.medicinenet.com/script/main/art.asp?articlekey=8120">vaginal yeast
infections in women.

Thrush usually develops
suddenly, but it may become chronic, persisting over a long period of time. A common
sign of thrush is the presence of creamy white, slightly raised lesions in your
mouth—usually on your tongue or inner cheeks—but also sometimes on the roof of your
mouth, gums, tonsils, or back of your throat. The lesions, which may have a "cottage
cheese" appearance, can be painful and may bleed slightly when you scrape them or brush
your teeth. In severe cases, the lesions may spread into your esophagus, or swallowing
tube, causing:

• Pain or difficulty
  swallowing


• A feeling that food gets stuck in the throat
  or mid-chest area


• href="http://www.medicinenet.com/script/main/art.asp?articlekey=361">Fever,
  if the infection spreads beyond the
  esophagus

Small amounts of the candida fungus
are present in the mouth, digestive tract, and skin of most healthy people and are
normally kept in check by other bacteria and microorganisms in the body. However,
certain illnesses, href="http://www.medicinenet.com/script/main/art.asp?articlekey=488">stress,
or medications can disturb the delicate balance, causing the fungus candida to grow out
of control, causing thrush.

Medications that upset the
balance of microorganisms in the mouth and may cause thrush include corticosteroids,
antibiotics, and href="http://www.medicinenet.com/script/main/art.asp?articlekey=10456">birth
control pills.