Recurrent headaches: what every allergist should know.

OBJECTIVE: To provide the allergist information regarding the recognition, diagnosis, classification, and management of headaches. DATA SOURCES: Literature and relevant articles pertaining to various types of headache are reviewed and the clinical experience of the authors is presented. CONCLUSIONS: After reading this article, the allergist should know the various causes of headache, recognize the warning signs of serious neurologic disease, and determine whether allergy or adverse food reactions are playing a role.

MR findings in oculocerebrorenal syndrome.

Oculocerebrorenal syndrome is an X-linked recessive disorder characterized by congenital ocular abnormalities, mental retardation, renal disease, and metabolic bone disease. We report a case of oculocerebrorenal syndrome and, using T1-, proton density-, and T2-weighted imaging sequences, are able to characterize two distinct white matter abnormalities: one lesion is punctate and has signal characteristics that parallel that of cerebrospinal fluid; a second lesion, found in association with the first, consists of patchy white matter abnormalities that are hypointense on T1-weighted images but hyperintense on proton density- and T2-weighted images.