Many children do develop speech sounds over time but those who do not often need the services of an SLP to learn correct speech sounds. Some speech sound errors can result from physical problems, such as: 1  developmental disorders (e.g.,autism). 2  genetic syndromes (e.g., Down syndrome).
adjective. 1  The definition of anergic is a condition in which the body fails to react to an injected antigen. 2  The definition of anergic is a condition in which the body fails to react to an injected antigen. A child whose body does not react properly to an immunization is anergic.
Antagonistic to the action of sympathetic or other adrenergic nerve fibers. See also: sympatholytic. antiadrenergic. 1. sympatholytic; opposing the effects of impulses conveyed by adrenergic postganglionic fibers of the sympathetic nervous system. 2. an agent that so acts. antiadrenergic. 1 pertaining to the blockage of the effects of impulses transmitted by the adrenergic postganglionic fibers of the sympathetic nervous system.