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Abstract
Diabetic neuropathy (DN) is one of the main complications of diabetes mellitus (DM), responsible for a high morbimortality rate and burdening public health resources. Photobiomodulation has proven to be effective in relieving pain, reducing the inflammation, and improving vascularization. We report an evaluation of the effectiveness of photobiomodulation for the relief of pain and to improve the quality of life in patients with diabetic neuropathy. A total of 30 diabetic volunteers with DN were randomly divided into three groups: control, photobiomodulation (PBM), and placebo (P-PBM). Those in Group control were instructed to take diabetic neuropathy medication for 30 days. The PBM group received laser photobiomodulation treatment with the following protocol: three sessions per week for 30 days, totaling 12 applications (wavelength, 808 nm; energy density, 12 J/cm²). in the of following nerves: tibial medial plantar, own plantar digital, common plantar digital, superficial fibular, deep fibular, sciatic, saphenous, and common fibular. Patients in the P-PBM Group were submitted to the PBM protocol, but with the device switched off. Before and after applying the therapeutic protocols, all volunteers were subjected to pain evaluations. The results showed a statistically significant difference between the groups (p < 0.05). The PBM group confirmed an analgesic effect directly related to the use of the photobiomodulation, whilst the patients in group control and P-PBM, did not present significant results. The study demonstrated that laser photobiomodulation is effective in significantly reducing pain and improving the quality of life of patients with diabetic neuropathy.
Highlights
Diabetes mellitus (DM) is a metabolic syndrome characterized by the prevalence of hyperglycemia, caused by a deficiency in insulin secretion and/or its inability to adequately perform its functions (De Abreu & Oliveira, 2015). it was estimated that 120 million people had diabetes mellitus (DM) worldwide and it is expected that by 2025 this number will reach 300 million (Telo et al, 2016)
The mean body mass index (BMI) was 26.8, indicating that the individuals were slightly overweight, according to the BMI classification defined by the World Health Organization (WHO), and the mean age of the patients was 66 years
The present study investigated the effects of photobiomodulation (PBM) for pain relief and quality-of-life improvement in patients with diabetic neuropathy
Summary
Diabetes mellitus (DM) is a metabolic syndrome characterized by the prevalence of hyperglycemia, caused by a deficiency in insulin secretion and/or its inability to adequately perform its functions (De Abreu & Oliveira, 2015). it was estimated that 120 million people had DM worldwide and it is expected that by 2025 this number will reach 300 million (Telo et al, 2016). DM is a chronic disease of multiple etiology, with long-term consequences that can lead to dysfunction, damage, or failure of several organs It is associated with increased mortality due to the high risk of developing acute and chronic incapacitating complications (Duncan et al, 2017). DN is considered to be a set of syndromes with several clinical and subclinical manifestations, leading to the occurrence of an extensive neurological lesion involving the sensorimotor and autonomous components of nervous system (Aslam & Rajbhandari, 2014; Yoo et al, 2013). This is associated with atherosclerosis of small vessels, making the individual susceptible to the development of ischemic and infectious problems in extremities, leading to ulceration, gangrene, and even limb amputation (Aslam & Rajbhandari, 2014; Yoo et al, 2013)
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