Related Experiment Video
Updated: Jul 27, 2026

Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
Published on: November 21, 2013
Risk factors for tardive dyskinesia in a large population of youths and adults
B A Wszola1, K M Newell, R L Sprague
1Department of Kinesiology, Pennsylvania State University, University Park 16802, USA.
Abstract:
This study was designed to identify predisposing factors for tardive dyskinesia (TD) in youths and adults within a large, predominantly developmentally disabled and mentally ill population. The findings support previously reported risk factors for TD, including increasing age, use of anticholinergic medication for those over 40 years old, and long duration of neuroleptic exposure for those over 18 years of age. Higher cumulative levels of "typical" neuroleptic dosage decreased the risk for TD for those over 18. Novel findings included the benefit of personality disorder in individuals 18 to 40 years old and the strong risk factor of profound mental retardation in all age groups. These findings reveal further complex interactions to the risk factors for TD.
Related Concept Videos
Parkinson's Disease: Treatment
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of its...
Drug Toxicity: Risk factors
Psychological and Sociocultural Causes of Schizophrenia
Attention-Deficit/Hyperactivity Disorder
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.
Conduct Disorder
Parkinson Disease l: Introduction

