H-R: Fibromyalgia & Chronic Fatigue Syndrome Glossary

Get a definition of the HPA axis and find out how it's believed to function in people with chronic fatigue syndrome.

Get a definition of human herpesvirus 6 (HHV-6) and see how it may be linked to chronic fatigue syndrome.

Get a definition of hyperalgesia and see how it's involved in fibromyalgia pain.

See what hypothyroidism is and how it relates to fibromyalgia and chronic fatigue syndrome.

Get a definition of immune system, and find out how the immune system relates to chronic fatigue syndrome.

Get a definition of Lyme disease and chronic Lyme disease and see how they may be linked to chronic fatigue syndrome.

Get a definition of melatonin, learn how melatonin/serotonin levels can impact your sleep cycle, and see what role melatonin plays in fibromyalgia.

Get a definition of monogenic and see what a monogenic disorder is.

Find out what myalgic encephalomyelitis and myalgic encephalopathy (both called ME) actually mean, and why chronic fatigue syndrome advocates in the United States are pushing for ME/CFS to be the condition's official name.

Get a definition of narcotics, find out what effects they can have and get examples of prescription narcotics.

Learn what natural killer cells are and the role of natural killer cells in CFS (chronic fatigue syndrome).

Get a definition of neuroimmune and see how the term applies to fibromyalgia and chronic fatigue syndrome.

Get a definition of neurotransmitters and find out which neurotransmitters are out of balance in people with fibromyalgia and chronic fatigue syndrome.

Get a definition of the U.S. Food and Drug Administration's New Drug Application.

Definition of nociceptors. See how they're involved in the pain associated with fibromyalgia and chronic fatigue syndrome.

Learn what nonsteroidal anti-inflammatory drugs (NSAIDs) are, what they're used for and whether they're effective for fibromyalgia and chronic fatigue syndrome.

Find out about the neurotransmitter/hormone norepinephrine and how abnormalities contribute to the chronic pain condition fibromyalgia.

Get a definition of pain threshold and see how it relates to fibromyalgia.

Get a definition of pain tolerance.

Get a definition of peripheral nervous system and see how it's involved with fibromyalgia and chronic fatigue syndrome.

Learn the definition of paresthesia, which is one of the fibromyalgia pain symptoms.

Get a definition of polygenic and polygenic disorder and see how the term relates to fibromyalgia.

Find out what a polymerase chain reaction is and why it's common to come across this term when researching chronic fatigue syndrome.

Get a definition of post-exertional malaise and find out what it means for people with chronic fatigue syndrome.

Find out what a retrovirus is and how a retrovirus may be associated with chronic fatigue syndrome.

Find out what RNase L is and what role it plays in chronic fatigue syndrome.