Infectious diseases:
Viral infections of the upper respiratory tract, an infection of the oral cavity, or viral hepatitis frequently develop taste abnormalities...
Autoimmune diseases:Various autoimmune diseases are known to affect taste function. For example, patients with Sjögren’s syndrome show decreased taste acuity.
Taste bud homeostasis is maintained by balanced cell turnover and differentiation. Tongue abnormalities may provide a diagnostic and therapeutic clue for dentists.