Atypical Positional Vertigo: Definition, Causes, and Mechanisms.

Paroxysmal positional vertigo is a frequent cause for consultation. When approaching these patients, we try to differentiate central from peripheral causes, but sometimes we find manifestations that generate diagnostic doubts. In this review, we address atypical paroxysmal positional vertigo, reviewing the literature on the subject and giving a provisional definition of atypical positional vertigo as well as outlining its causes and pathophysiological mechanisms.

Prediction models for insulin resistance in girls with premature adrenarche. The premature adrenarche insulin resistance score: PAIR score.

Aim: The purpose of this study was to develop an accurate regression model to predict insulin resistance in girls with premature adrenarche.

Methods: The insulin sensitivity index was calculated from the frequently sampled intravenous glucose tolerance test with tolbutamide. Thirty-five prepubertal girls (23 Caribbean-Hispanic and 12 African-American; mean age 6.

Presentation and 5-year follow-up of type 2 diabetes mellitus in African-American and Caribbean-Hispanic adolescents.

Objective: We report the presentation and 5-year follow-up of 89 African-American (AA) and Caribbean-Hispanic (CH) youths with type 2 diabetes mellitus (T2DM) followed at the Montefiore Medical Center, Bronx, N.Y., USA, from 1990 to 2000.