What does candidiasis mean?
Candidiasis is the medical term for an infection caused by yeasts of the genus Candida, above all Candida albicans. These fungi live harmlessly on the skin and mucous membranes of most healthy people, but they can multiply and cause disease when the body's natural balance is disturbed — for example by antibiotics, diabetes, pregnancy, or a weakened immune system. The infection takes familiar forms such as oral thrush, with white patches in the mouth, and vaginal yeast infections, while invasive candidiasis, in which the fungus enters the bloodstream or deep organs, is a serious concern in hospitals. The word functions as a formal clinical noun, so general readers more often encounter its everyday counterparts 'thrush' and 'yeast infection'. Its name derives from Candida, the Latin word for 'white', a fitting echo of the whitish lesions the fungus produces. Knowing the term helps patients read medical reports and understand diagnoses accurately.
nounA fungal infection caused by yeasts of the genus Candida, most commonly Candida albicans, affecting the skin, mucous membranes, or internal organs.
- Infection caused by Candida yeasts, especially Candida albicans, occurring on mucous membranes (as thrush), skin, or — in severe cases — as invasive systemic disease.
"Prolonged antibiotic use can disturb normal microbial balance and lead to oral candidiasis."
"The infant developed white patches in her mouth that the pediatrician identified as oral candidiasis."
"Patients with weakened immune systems are at elevated risk of invasive candidiasis, which can affect the bloodstream and internal organs."
Rarely used; the singular normally suffices because the word denotes a condition or disease category rather than countable instances. When distinguishing multiple cases, writers typically refer to 'cases of candidiasis'.
"The clinic recorded several candidiases among immunocompromised patients over the winter, though most reports simply listed separate cases of candidiasis."
The yeast behind candidiasis, Candida albicans, lives harmlessly in most of us right now — it only turns pathogenic when the body's microbial balance is disrupted.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of candidiasis
Candidiasis comes from Candida, the genus name of the causative yeast, combined with the suffix '-iasis', used in medicine to denote a diseased condition. The genus name itself was taken from the Latin 'candidus', meaning 'shining white', a reference to the white appearance of the lesions the organism produces. Modern Latin scientific naming supplied the genus term, and English medical usage formed the disease name from it, placing candidiasis among the many '-iasis' conditions (such as psoriasis) named for their cause or character. Related words sharing the Latin root include 'candid' and 'candidate'.
How candidiasis is actually used
A clinical, medical term used chiefly by healthcare professionals; lay speakers more often use 'thrush' for oral or vaginal infections or simply say a 'yeast infection'. The plural is rare in practice since the word usually denotes an infection event or condition rather than countable items.
Easily confused with candidiasis
'Candied' describes food preserved or coated in sugar, whereas candidiasis is a fungal infection — the words merely share a similar opening sound.
'Candida' refers to the yeast organism itself (the genus), while candidiasis refers to the infection or disease it causes.