For use of the term nodule in dermatology, see Cutaneous condition: Nodule

In medicine nodules are solid, non-blisterform elevated areas in or under the skin that are larger than 0.5 centimeters. Nodules may form on tendons and muscles in response to injury. The vocal cords may also develop nodules. Nodules are normally benign and often painless, although they can affect the functioning of the organ.