|Classification and external resources|
|DiseasesDB||31991 33448 33447|
|MeSH||D001321, D015518, D015518|
Candidiasis, often called yeast infection or thrush, is a type of infectious disease. It is a fungal infection (mycosis). The disease is caused by any of the Candida species of yeast. Candida albicans is the most common species.
Candida yeasts are common in most people. The yeast is usually controlled in the body. When the yeast grows without control, an infection happens.
A weakened, unhealthy, or young immune system may allow candidiasis to develop. HIV/AIDS, cancer treatments, steroids, stress and not enough nutrients may cause candidiasis. Antibiotic and steroid use are the most common reason for uncontrolled yeast. Antibiotic kills some bacteria, and changes the balance of microorganisms in the body. This may allow the yeast to multiply.
Candidiasis in the throat and mouth
Esophageal candidiasis is an infection of the esophagus by Candida albicans. The disease happens in unhealthy people. Sometimes people will get the infection when they are treated with chemotherapy. People with AIDS can also get this infection more often.
One sign of esophageal candidiasis is painful swallowing. Weight loss can happen when a person has esophageal candidiasis for a long time.
Candida may appear as thick white or cream-coloured areas on mucosal membranes. The infected mucosa of the mouth may look inflamed. In babies the condition is called thrush. For babies, it is usually painless and causes no pain. Adults may experience discomfort or burning sensation.
- the mouth (oral candidiasis)
- the vagina or vulva (vaginal candidiasis or thrush)
- folds of skin in the diaper area (diaper rash)
- the nipples while breastfeeding
- the penis or foreskin
- the armpit
- the ear
- the skin around or in the nostrils
- the ears
Candidiasis is a very common cause of vaginal irritation, or vaginitis. It can also occur on the penis or scrotum. In unhealthy patients, the Candida infection can affect the esophagus. It could get everywhere in the body. This would cause a much more serious health condition, a state called candidemia. 
- National Institute of Allergies and Infections fact sheet on vaginitis/vaginal infections
- Oral Thrush Mayo Clinic
- DermAtlas candidiasis images
- InteliHealth page on candidiasis Presented by InteliHealth reviewed by Harvard Medical School
- Links to pictures of Yeast Infection (Hardin MD/Univ of Iowa)
- Treating a vaginal yeast infection