White or black fungus in the mouth could signal serious health conditions, dentist warns

Black fungus in the mouth is also cause for concern.

Dr Azizi added: “A black fungal presence which tends to be caused by a build-up of dead skin cells can also indicate thrush but alternatively, could point to diabetes or, in very rare cases, cancer.

“If serious medical issues are ruled out, both types of fungus can be eradicated through thorough brushing of the tongue over a couple of weeks.

“If this doesn’t solve the problem, your dentist can prescribe anti-fungal drugs including clotrimazole, miconazole, nystatin or fluconazole.”