Neuropsychological dysfunction in asthmatic children.

Neuropsychological dysfunction associated with pediatric asthma is reviewed. Significant methodological confounds associated with clinical research, including problems with the objective measure of asthma, are prevalent in many studies. Most evidence does not support the belief that asthma alone results in homogeneous neuropsychological compromise. Studies of adverse reactions to asthma medications indicate medication-specific effects including slight improvements in some aspects of neuropsychological functioning, such as attention, and deficiencies in other aspects of neuropsychological functioning, such as memory. The acute neuropsychological effects of various medication regimens appears to be reversible with cessation of the asthma medication under suspicion, although no data yet exist regarding the long-term effects of therapeutic dosages of asthma medications upon a developing nervous system. The hypothetical effects of asthma on school performance have been related to non-neuropsychological variables such as a child's socioeconomic status, though there is also evidence suggesting that poorly controlled asthma is related to learning problems. Implications for pediatric neuropsychologists are discussed.