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.
Finger pain can be caused by disease or injury affecting any of the structures in the finger, including the bones, muscles, joints, tendons, blood vessels, or connective tissues. Joint pain is a feature of joint inflammation (arthritis) that may occur in the joints of the finger bones. This can sometimes be accompanied by redness, swelling, or warmth of the joints. Both osteoarthritis and rheumatoid arthritis (RA) commonly affect joints of the fingers. Trauma or injury to the finger, such as bruises, dislocations, and fractures of bone are all common causes of finger pain. Tumors of the structures in the finger are a very rare cause of finger pain. Certain conditions such as diabetes can cause damage to the nerves, resulting in pain, numbness, or tingling of the arms and legs.