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Chronic Fatigue Syndrome

2014-08-27 03:15:49 | BioPortfolio

Summary

Over the past decade, the Rochester Center for Behavioral Medicine (RCBM) has evaluated many patients with attention deficit hyperactivity disorder (ADHD). A recurrent finding in these patients is a history of unexplained fatigue and musculoskeletal pain. Some of these patients have previously been identified by other treatment providers as having fibromyalgia syndrome (FMS) or chronic fatigue syndrome (CFS). Many of these patients have been evaluated within the traditional medical system, often by rheumatologists and neurologists. Others have been evaluated in non-traditional settings by chiropractors and nutritionists. Physicians shun these patients as their complaints are persistent. They are perceived to be malingering or opiate seeking. Many physicians will remark that they do not believe in these conditions. Rather uniformly, patients and their doctors are unhappy with the results of treatment. This dynamic is consistent with the experience of adult ADHD patients prior to the acceptance of this condition.

Treatment of these patients in our clinic has revealed that when their underlying ADHD is treated with psychostimulant medication, many patients report significant improvements with regard to their fatigue and musculoskeletal pain. Patients report less subjective fatigue and pain and note overall functional improvement, although the initial and primary objective was the treatment of their attention or hyperactivity problems. We speculate that stimulants are efficacious by offering two distinct clinical properties. 1) anti-fatigue properties and 2) properties that allow patients to filter out extraneous stimuli (i.e. chronic muscle pain).

As a result of these findings RCBM developed a chronic fatigue/fibromyalgia clinic in the early 2000's. This clinic was staffed by a board-certified rheumatologist and the psychiatric staff at RCBM. Through the major referral hospital in the area, patients with self-identified fibromyalgia and chronic fatigue were referred to our clinic. Over eighteen months, we evaluated 75 patients, and found that in patients who had comprehensive evaluations, nearly 70 percent also had a history of ADHD, inattentive or combined types. Diagnosis was made using clinical history and standardized symptom checklists. Oftentimes, the ADHD had been previously undiagnosed. This finding supports the link between ADHD and FMS/CFS.

Results from these evaluations reinforced our initial findings: patients who are treated for their ADHD symptoms also show a reduction in their chronic pain and fatigue symptoms. This is true regardless of previous (unsuccessful) therapies to treat their fibromyalgia.

As a result of these findings, we are conducting a controlled study to further demonstrate the efficacy of lisdexamfetamine dimesylate (LDX) in controlling fatigue symptoms in patients presenting with chronic fatigue syndrome. This is a double-blind, placebo-controlled study over a period of 8 weeks, where subjects are randomized to either LDX or placebo. We will evaluate subjects through standardized pain, fatigue and ADHD assessment scales.

Study Design

Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment

Conditions

Chronic Fatigue Syndrome

Intervention

Lisdexamfetamine Dimesylate, Placebo Comparator: Sugar pill

Location

Rochester Center for Behavioral Medicine
Rochester Hills
Michigan
United States
48307

Status

Recruiting

Source

Rochester Center for Behavioral Medicine

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:15:49-0400

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Medical and Biotech [MESH] Definitions

A dextroamphetamine drug precursor that also functions as a CENTRAL NERVOUS SYSTEM STIMULANT and DOPAMINE UPTAKE INHIBITOR and is used in the treatment of ATTENTION DEFICIT HYPERACTIVITY DISORDER.

A common nonarticular rheumatic syndrome characterized by myalgia and multiple points of focal muscle tenderness to palpation (trigger points). Muscle pain is typically aggravated by inactivity or exposure to cold. This condition is often associated with general symptoms, such as sleep disturbances, fatigue, stiffness, HEADACHES, and occasionally DEPRESSION. There is significant overlap between fibromyalgia and the chronic fatigue syndrome (FATIGUE SYNDROME, CHRONIC). Fibromyalgia may arise as a primary or secondary disease process. It is most frequent in females aged 20 to 50 years. (From Adams et al., Principles of Neurology, 6th ed, p1494-95)

A mental disorder characterized by chronic fatigue and concomitant physiologic symptoms.

A syndrome characterized by persistent or recurrent fatigue, diffuse musculoskeletal pain, sleep disturbances, and subjective cognitive impairment of 6 months duration or longer. Symptoms are not caused by ongoing exertion; are not relieved by rest; and result in a substantial reduction of previous levels of occupational, educational, social, or personal activities. Minor alterations of immune, neuroendocrine, and autonomic function may be associated with this syndrome. There is also considerable overlap between this condition and FIBROMYALGIA. (From Semin Neurol 1998;18(2):237-42; Ann Intern Med 1994 Dec 15;121(12): 953-9)

A state arrived at through prolonged and strong contraction of a muscle. Studies in athletes during prolonged submaximal exercise have shown that muscle fatigue increases in almost direct proportion to the rate of muscle glycogen depletion. Muscle fatigue in short-term maximal exercise is associated with oxygen lack and an increased level of blood and muscle lactic acid, and an accompanying increase in hydrogen-ion concentration in the exercised muscle.

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