Taste sensation or gustation is an important feature that determines the food selection and nutrition of human beings. Gustation is a complex process that takes place in the taste buds resulting in the chemosensory perception of the food substances. Humans have the ability to perceive a variety of tastes such as sweet, sour, bitter, salty, and umami. Taste disorder is a broad term used to denote any alteration in the perception of tastes. Taste disorder is one of the commonly encountered oral manifestations of both type 1 and type 2 diabetes mellitus (T1DM, T2DM), which is often ignored. These disorders can have a direct impact on the glycemic control of diabetic patients. There are various chairside investigations that can help in the detection of taste disorders. Early detection and appropriate management of taste disorders in patients with diabetes are essential for better control of glycemic levels. [ABSTRACT FROM AUTHOR]