Chronic fatigue syndrome (CFS) causes long-lasting exhaustion and fatigue unalleviated by sleep or rest. In the United States, more than a million people have been diagnosed with CFS. For many, the symptoms of the increasingly common condition reduce their quality of life.
One common symptom of chronic fatigue syndrome is impaired cognitive function. Often, people with the condition have difficulty forming coherent thoughts and expressing them clearly and cohesively. They may feel as if their short-term memory is limited and as though thoughts dissolve in their head. They may find it difficult to talk and understand speech. Some people have also reported difficulty understanding numbers or reading a book.
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