Asano M, Finlayson ML Meta-analysis of three different types of fatigue management interventions for people with multiple sclerosis: exercise, education, and medication. Mult Scler Int. 2014;2014:798285. doi: 10.1155/2014/798285. Epub 2014 May 14.
Induruwa I, Constantinescu CS, Gran B Fatigue in multiple sclerosis - a brief review. J Neurol Sci. 2012 Dec 15;323(1-2):9-15. doi: 10.1016/j.jns.2012.08.007. Epub 2012 Aug 27.
Kos D, Kerckhofs E, Nagels G, D'hooghe MB, Ilsbroukx S Origin of fatigue in multiple sclerosis: review of the literature. Neurorehabil Neural Repair. 2008 Jan-Feb;22(1):91-100. doi: 10.1177/1545968306298934. Epub 2007 Apr 4.
Saligan LN, Farmer C, Ballard ED, Kadriu B, Zarate CA Jr Disentangling the association of depression on the anti-fatigue effects of ketamine. J Affect Disord. 2019 Feb 1;244:42-45. doi: 10.1016/j.jad.2018.10.089. Epub 2018 Oct 6.
Wesson JM, Cooper JA, Jehle LS, Lockhart SN, Draney K, Barber J The functional index for living with multiple sclerosis: development and validation of a new quality of life questionnaire. Mult Scler. 2009 Oct;15(10):1239-49. doi: 10.1177/1352458509107019
A Pilot Study of Intravenous, Subanesthetic Dose of Ketamine Versus Placebo, A Crossover Design, for Multiple Sclerosis Related Fatigue
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
