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Morning stiffness
Muscle spasms or twitches (fasciculations)
Muscle weakness, especially in the legs
Diffuse, non-inflammatory swelling of the limbs, hands, and feet
Joint pain around tendon inserts
Temporomandibular joint disorder (TMJ)

According to a study published in Frontiers in Human Neuroscience, the symptoms of fibromyalgia are associated with increased rates of functional disability. High levels of this kind of pain and stiffness, as well as other concerns listed below, can result in the loss of walking speed, stride, and balance on a level similar to that of rheumatoid arthritis or osteoarthritis.

Cognitive

“Fibro fog,” also known as “brain fog,” is one of the more pervasive symptoms of fibromyalgia. Many people living with the disorder will tell you that the symptoms of cognitive impairment are nearly as debilitating as the pain itself.

Symptoms may include:

Forgetfulness
Confusion
Trouble concentrating
Temporary loss of familiarity with your surroundings
Impaired comprehension
Difficulty speaking known words (dysphasia)
Difficulty orienting direction or space (topographagnosia)
Difficulty processing information you hear (central auditory processing disorder)
Difficulty processing numbers or math (dyscalculia)

What Is Fibro Fog and ME/CFS Brain Fog?

Energy and Sleep

In fibromyalgia, fatigue about more than just being tired; it’s a persistent exhaustion that fails to improve despite rest. The chronic fatigue not only compounds feelings of fogginess and disorientation, it contributes to high rates of depression in people living with the disorder. It is no surprise that fibromyalgia is so closely associated with chronic fatigue syndrome (CFS), both of which share similar symptoms.

Fatigue is among the most characteristic symptoms of fibromyalgia, affecting four out of every five people with the disorder.

Fibromyalgia-related fatigue often goes hand-in-hand with sleep problems, the coupling of which is all but guaranteed to leave you exhausted and drained.