PatientPlus articles are written by UK doctors and are based on research evidence, UK and European Guidelines. They are designed for health professionals to use, so you may find the language more technical than the condition leaflets. ( Patient.co.uk )
It is unfortunate but true that Fibromyalgia is often viewed as a Somatic type disorder originating from the head..ie: we’ve all heard the one about “it’s all in your head”!!
This page gives an excellent descriptor of Somatic Symptom Disorders 🙂