Restless legs syndrome classification

Restless legs syndrome Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

There is no established system for the classification of [disease name].

OR

[Disease name] may be classified according to [classification method] into [number] subtypes/groups: [group1], [group2], [group3], and [group4].

OR

[Disease name] may be classified into [large number > 6] subtypes based on [classification method 1], [classification method 2], and [classification method 3]. [Disease name] may be classified into several subtypes based on [classification method 1], [classification method 2], and [classification method 3].

OR

Based on the duration of symptoms, [disease name] may be classified as either acute or chronic.

OR

If the staging system involves specific and characteristic findings and features: According to the [staging system + reference], there are [number] stages of [malignancy name] based on the [finding1], [finding2], and [finding3]. Each stage is assigned a [letter/number1] and a [letter/number2] that designate the [feature1] and [feature2].

OR

The staging of [malignancy name] is based on the [staging system].

OR

There is no established system for the staging of [malignancy name].

Classification

• There is no established system for the classification of [disease name].

OR

• [Disease name] may be classified according to [classification method] into [number] subtypes/groups:
  • [Group1]
  • [Group2]
  • [Group3]
  • [Group4]

OR

• [Disease name] may be classified into [large number > 6] subtypes based on:
  • [Classification method 1]
  • [Classification method 2]
  • [Classification method 3]
• [Disease name] may be classified into several subtypes based on:
  • [Classification method 1]
  • [Classification method 2]
  • [Classification method 3]

OR

• Based on the duration of symptoms, [disease name] may be classified as either acute or chronic.

OR

• If the staging system involves specific and characteristic findings and features:
• According to the [staging system + reference], there are [number] stages of [malignancy name] based on the [finding1], [finding2], and [finding3]. Each stage is assigned a [letter/number1] and a [letter/number2] that designate the [feature1] and [feature2].

OR

• The staging of [malignancy name] is based on the [staging system].

OR

• There is no established system for the staging of [malignancy name].

Classification

RLS is either primary or secondary.

Primary

• Primary RLS is considered idiopathic, or with no known cause. Primary RLS usually begins before approximately 40 to 45 years of age, and can even occur as early as the first year of life. In primary RLS, the onset is often slow. The RLS may disappear for months, or even years. It is often progressive and gets worse as the person ages. RLS in children is often misdiagnosed as growing pains.

Secondary

• Secondary RLS often has a sudden onset and may be daily from the very beginning. It often occurs after the age of 40, however it can occur earlier. It is most associated with specific medical conditions or the use of certain drugs. The most commonly associated medical condition is iron deficiency, which accounts for just over 20% of all cases of RLS. The conditions include: pregnancy, varicose vein or venous reflux, folate deficiency, sleep apnea, uremia, diabetes, thyroid problems, peripheral neuropathy, Parkinson's disease and certain auto-immune disorders such as Sjögren's syndrome, Celiac Disease, and rheumatoid arthritis. Treatment of the underlying condition, or cessation of use of the offending drug, often eliminates the RLS.