Chronic Pain

Using computers to design drugs

Designing a new medicine is an expensive and time consuming business. Typically it takes around $2 billion and ten years for a new drug to move from its initial design in the lab, to the clinic. All the ...

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First-of-a-kind surgery in US for severe headaches

For those suffering excruciating pain from cluster headaches, relief may soon be available from an investigational device being studied in a national multicenter clinical trial. Recently, doctors at The Ohio ...

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Estrogen increases cannabis sensitivity

Smoking today's concentrated pot might be risky business for women, according to new research from Washington State University. The study is the first to demonstrate sex differences in the development of tolerance ...

Sep 03, 2014
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Chronic pain is pain that has lasted for a long time. In medicine, the distinction between acute and chronic pain has traditionally been determined by an arbitrary interval of time since onset; the two most commonly used markers being 3 months and 6 months since onset, though some theorists and researchers have placed the transition from acute to chronic pain at 12 months. Others apply acute to pain that lasts less than 30 days, chronic to pain of more than six months duration, and subacute to pain that lasts from one to six months. A popular alternative definition of chronic pain, involving no arbitrarily fixed durations is "pain that extends beyond the expected period of healing."

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