Pain

Pain occurs in a wide range of forms in ME/CFS. These include abdominal pain, allodynia, arthralgia, carpal tunnel syndrome, chest pain, chronic pain, ear pain, esophageal spasms, eye pain, fibromyalgia, gallbladder pain, headache, heartburn, migraine, muscle spasms, myalgia, neck pain, proctalgia fugax, sciatica, sinus headaches, vein pain and tenesmus.

Pain can also occur as a consequence of common comorbid illnesses such as endometriosis, Sjogren's syndrome, IBS or fibromyalgia.