Extensive pneumocranium.

STUDY DESIGN: Three cases of hysterical paralysis are reported and the literature is reviewed. OBJECTIVE: To report and discuss three cases of psychogenic paraplegia in order to increase the awareness and assist in the diagnosis and treatment of this uncommon disorder. SUMMARY OF BACKGROUND DATA: Hysterical paralysis, a form of conversion disorder, is an uncommon psychogenic, nonorganic loss of motor function precipitated by a traumatic event. The prevalence of conversion disorder in the general population reportedly is between 5 and 22 per 100,000 persons. The pursuit of a diagnosis for the hysterical paraplegic patient necessarily consumes valuable resources and time. If early recognition can be facilitated, these resources may be conserved. METHODS: The medical records for three healthy young women who presented to the authors' service reporting complete loss of lower extremity function were reviewed retrospectively along with the related laboratory, electrodiagnostic, and imaging studies. Two of the women were involved in motor vehicle accidents. One had a history of a previous hysterical seizure. Inconsistencies in physical examination and studies were noted. RESULTS: All three patients had normal laboratory, electrodiagnostic, and imaging studies. Discrepancies included complete loss of motor control and sensation in the lower extremities in the face of normal deep tendon reflexes as well as incontinence of bowel and bladder despite intact rectal tone. The patients spontaneously recovered and ambulated out of the hospital without assistance after their normal test results and physical examination inconsistencies were presented to them. CONCLUSIONS: Hysterical paraplegia is a type of conversion disorder. It is a diagnosis of exclusion that typically presents as mono-, hemi-, para-, or quadriplegia. The pursuit of a diagnosis for the hysterical paraplegic patient necessarily consumes valuable resources and time. The typical patient is a female from a low socioeconomic background with limited education. The DSM-IV-TR criteria must be met to fulfill the diagnosis of conversion disorder. Electrodiagnostic and imaging studies can aid in the diagnosis. Treatment revolves around explaining the normal diagnostic results to the patients and guiding them to appropriate psychiatric and physiotherapy. Rapid recovery should be expected, but can take up to 6 months.

Accidents, Traffic↗

PubMed2002

Restricted driver licensing for medical impairments: does it work?

BACKGROUND: Medical conditions may adversely affect driving ability. Many North American jurisdictions provide restricted driving licences that permit people with certain medical conditions to drive under limited conditions, but the effectiveness of such programs has not yet been determined. The objectives of this study were to evaluate the rates of crashes and traffic violations among drivers with a restricted licence, compared with the rates in the general driving population, and to compare the crash and traffic violation rates before and after driving restrictions were imposed. METHODS: We retrospectively analyzed a cohort of all licensed Saskatchewan drivers registered from Jan. 1, 1992, to Apr. 19, 1999. The cohort was divided into those with a restricted licence and those with an unrestricted general licence. We used multivariate Poisson regression to calculate incidence rate ratios (IRRs) for at-fault crashes and traffic violations, adjusting for age, sex and residence (urban v. rural). We used interventional time series analysis to compare rates of crashes and traffic violations before and after the imposition of driving restrictions. RESULTS: Of the 703,758 drivers in the study, 23,185 (3.3%) had a restricted licence. Restricted licence holders had a higher crash rate than drivers without restrictions (adjusted IRR 1.13, 95% confidence interval [CI] 1.11-1.17). However, this rate was lower than that among male drivers (adjusted IRR 2.01, 95% CI 1.99-2.02) and urban drivers (adjusted IRR 1.38, 95% CI 1.37-1.39). Drivers with restricted licences had a lower traffic violation rate than those without restrictions (adjusted IRR 0.93, 95% CI 0.91-0.95). At-fault crash rates decreased by 12.8% (95% CI 2.4%-23.2%) and adjusted traffic violation rates decreased by 10.0% (95% CI 4.4%-15.7%) after restrictions were imposed. During the study period, licence restrictions likely averted up to 816 crashes and 751 traffic violations. INTERPRETATION: Province-wide population data suggest that a restricted licensing program appears to provide a significant decrease in the rates of crashes and traffic violations.

Accidents, Traffic↗