Sedentary Work Exerting up to 10 pounds (4.5 kg) of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally and other sedentary criteria are met.

Light Work Exerting up to 20 pounds (9.1 kg) of force occasionally and/or up to 10 pounds (4.5 kg) of force frequently, and/or negligible amount of force constantly to move objects. Physical demand requirements are in excess of those for Sedentary Work. Light Work usually requires walking or standing to a significant degree. However, if the use of the arm and/or leg controls requires exertion of forces greater than that for Sedentary Work and the worker sits most the time, the job is rated Light Work.

Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

Heavy Work Exerting up to 100 pounds (45.4 kg) of force occasionally, and/or up to 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Very Heavy Work Exerting in excess of 100 pounds (45.4 kg) of force occasionally, and/or in excess of 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Job Classification

In most duration tables, five job classifications are displayed. These job classifications are based on the amount of physical effort required to perform the work. The classifications correspond to the Strength Factor classifications described in the United States Department of Labor's Dictionary of Occupational Titles. The following definitions are quoted directly from that publication.

Sedentary Work Exerting up to 10 pounds (4.5 kg) of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally and other sedentary criteria are met.

Light Work Exerting up to 20 pounds (9.1 kg) of force occasionally and/or up to 10 pounds (4.5 kg) of force frequently, and/or negligible amount of force constantly to move objects. Physical demand requirements are in excess of those for Sedentary Work. Light Work usually requires walking or standing to a significant degree. However, if the use of the arm and/or leg controls requires exertion of forces greater than that for Sedentary Work and the worker sits most the time, the job is rated Light Work.

Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

Heavy Work Exerting up to 100 pounds (45.4 kg) of force occasionally, and/or up to 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Very Heavy Work Exerting in excess of 100 pounds (45.4 kg) of force occasionally, and/or in excess of 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Persistent Depressive Disorder (Dysthymia)


Related Terms

  • Dysthymia
  • Neurotic Depression
  • Reactive Depression

Differential Diagnosis

  • Major depression
  • Mood disorder due to general medical condition
  • Personality disorders
  • Substance-induced mood disorder

Specialists

  • Clinical Psychologist
  • Internal Medicine Physician
  • Psychiatrist

Comorbid Conditions

Factors Influencing Duration

Length of disability may be influenced by severity of symptoms (i.e., sleep disturbance) or the degree of psychomotor retardation (slowing of physical and mental processes) and job requirements. A suicide attempt may lengthen disability due to necessary medical treatment and the need for further psychological assessment. Emotionally stressful job duties may increase the length of disability. Symptoms may interfere with optimal work performance.

Medical Codes

ICD-9-CM:
300.4 - Dysthymic Disorder; Anxiety Depression, Depression with Anxiety, Depressive Reaction, Neurotic Depressive State, Reactive Depression

Overview

In DSM-5, persistent depressive disorder (dysthymia) consolidates chronic major depressive disorder and dysthymic disorder from DSM-IV-TR.

Persistent depressive disorder (dysthymia) (as well as dysthymic disorder) is a chronically depressed mood that occurs almost all day, almost every day, for 2 years at a minimum in adults (DSM-5).

Persistent depressive disorder may be preceded by major depression, and may coexist with major depressive episodes. When symptoms meet the criteria for major depressive disorder for 2 years in adults, a diagnosis of persistent depressive disorder as well as major depressive disorder should be made.

Incidence and Prevalence: In the course of their lifetime, about 5% of adults have dysthymic disorder (“Mood Disorders). Point prevalence of the disorder is about 3% (DSM-IV-TR). The 12-month prevalence of persistent depressive disorder in the US is approximately 0.5%, and 1.5% for chronic major depressive disorder (DSM-5).

Source: Medical Disability Advisor






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