What causes a taste bud to turn white?

A taste bud may turn white due to several factors, including dehydration, irritation, or infection. Conditions like oral thrush, which is a fungal infection, can also lead to a white appearance on the taste buds. Additionally, injury or inflammation from certain foods or oral hygiene products may cause them to appear white. If the discoloration persists or is accompanied by other symptoms, it's advisable to consult a healthcare professional.