The beneficial effects were still evident a year later, researchers said.
Fibromyalgia is primarily characterised by chronic widespread pain that is associated with fatigue, disordered sleep patterns, and/or depression. It affects up to one in 20 people, researchers wrote in the journal Acupuncture in Medicine.
The researchers compared individually tailored acupuncture treatment with sham treatment in 153 adults, all of whom had been diagnosed with fibromyalgia.
Both the real and simulated treatments, to which participants were randomly assigned, were provided in nine weekly sessions, each lasting 20 minutes.
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To evaluate the impact of both approaches, participants were asked about perceived levels of pain, depression, and health related quality of life (physical and mental), using validated scoring systems before treatment began, and then again 10 weeks, 6 months, and 12 months afterwards.
They were also asked about changes in the overall impact of their condition, as measured by the Fibromyalgia Impact Questionnaire, or FIQ for short, at 10 weeks, 6 and 12 months.
Analysis of the results showed that after 10 weeks, perceived pain intensity was lower among those given real acupuncture.
Significant differences persisted after a year, with an average fall of 20 per cent in the pain score among those treated with the real thing compared with just over 6 per cent for those given the simulated treatment.
FIQ scores also differed significantly between the two groups at all three time points, with reductions of 35 per cent, 25 per cent, and just over 22 per cent for those given tailored acupuncture compared with 24.5 per cent, just over 11 per cent, and 5 per cent, for those given simulated acupuncture.