One sign of a possible problem is a change in the color of the toenail. Discoloration of the toenails may be due to a variety of reasons. Once the underlying cause is determined, treatment can be administered to restore normal color to the nail. A fungal infection causes a toenail to become discolored. The nail usually turns a dark color from dirt or debris that has become trapped underneath the nail. Other symptoms of fungal infection include a foul smell, thickened nail, crumbled nail or a dull toenail that is misshapen.
Definition of affirm for English Language Learners. : to say that something is true in a confident way. : to show a strong belief in or dedication to (something, such as an important idea)
afferent afÂ·ferÂ·ent (Äf'Ér-Ént) adj. Carrying inward to a central organ or section, as nerves that conduct impulses from the periphery of the body to the brain or spinal cord. n. An afferent organ or body part, such as a blood vessel.