Many high quality studies have emerged from public databases, such as Surveillance,
Epidemiology, and End Results (SEER), National Health and Nutrition Examination Survey …

Fibromyalgia is a disorder that is part of a spectrum of syndromes that lack precise
classification. It is often considered as part of the global overview of functional somatic …

Although commonly observed in clinical practice, the heterogeneity of obstructive sleep
apnoea (OSA) clinical presentation has not been formally characterised. This study was the …

A growing number of individuals report prolonged symptoms following acute Coronavirus-19
(COVID-19) infection, known as post–COVID-19 condition (post-COVID-19). While studies …

The heterogeneity of the clinical presentation and the pathophysiologic mechanisms
associated with fibromyalgia (FM), and the modest results on average for any therapy, call …

Background In clinical practice, the bodily distribution of chronic pain is often used in
conjunction with other signs and symptoms to support a diagnosis or treatment plan. For …

The current study examined between-and within-subject variability in pain-related symptoms
as predictors of pain and fatigue, and identified patient subgroups on the basis of symptom …

Introduction The aim of this study was to identify subsets of patients with fibromyalgia with
similar symptom profiles using the Outcome Measures in Rheumatology (OMERACT) core …

Objectives The aim of this study was to identify subgroups in terms of adaptation to FM and
to test differences in FM severity between these subgroups. Methods The al-Ándalus project …

Fibromyalgia (FM) is a highly disabling syndrome defined by a low pain threshold and a
permanent state of pain. The mechanisms explaining this complex disorder remain unclear …