Humans detect taste with taste receptor cells. These are clustered in taste buds and scattered in other areas of the body. Each taste bud has a pore that opens out to the surface of the tongue enabling molecules and ions taken into the mouth to reach the receptor cells inside.1  salty.2  sour. 3  sweet. 4  bitter.5  umami.umans detect taste with taste receptor cells. These are clustered in taste buds and scattered in other areas of the body. Each taste bud has a pore that opens out to the surface of the tongue enabling molecules and ions taken into the mouth to reach the receptor cells inside. 1  salty. 2  sour. 3  sweet. 4  bitter. 5  umami.
Raynaud's Syndrome May be the Cause of Your Fiery Fingertips. Another major cause of burning fingertips is Reynaud's Syndrome. This condition is brought about when the blood vessels that supply the hands and/or feet narrow. In individuals with Reynaud's, episodes of burning fingertips are exacerbated by exposure to cold.
Keratosis. Your peeling skin on fingers could be caused by a condition called Keratosis that affects more than 40% of Americans. You will notice your skin have a texture like sandpaper and experience severe itching during cold weather. Using ointments containing urea or lactic acid may help with this situation.