• Renato Vellucci.
• Palliative Care and Pain Therapy Unit, University Hospital of Careggi, Florence, Italy. velluccir@aou-careggi.toscana.it
• Clin Drug Investig. 2012 Feb 1;32 Suppl 1:3-10.

AbstractChronic pain is a widespread public health issue that has many effects on physical, emotional and cognitive functions. An estimated 10-55% of all adults are thought to have chronic pain. Chronic pain is a multifactorial condition, caused by the complex interplay of nociceptive, neuropathic or mixed pathogenic mechanisms. Chronic pain is associated with specific and non-specific medical conditions such as cancer, HIV/AIDS, rheumatoid arthritis, fibromyalgia, osteoarthritis, low back pain or spinal stenosis and is broadly categorized as cancer pain and non-cancer pain. Evaluation of chronic pain requires a clear understanding of the nature of the pain and its underlying pathophysiology. Adequate assessment of pain, using validated tools, is an essential prerequisite of successful pain management. Unidimensional scales are useful for the measurement of pain intensity, while multidimensional scales measure both pain intensity and the extent to which pain interferes with life activity and emotional functioning. Patients should be reassessed and followed up in order to monitor progress and measure improvements in pain.

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