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.
adrenergic (adÂ´rinurÂ´jik), adj 1. transmitted by norepinephrine or activated by norepinephrine or the other sympathomimetic agents. n 2. a term applied to nerve fibers that liberate epinephrine or norepinephrine at a synapse when a nerve impulse passes. n 3. a drug that mimics the action of adrenergic nerves. n.pl drugs that mimic the actions of norepinephrine, a neurotransmitter, resulting in stimulation of the sympathetic nervous system.