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Obviously, open sores to the hands and/or feet would be a reason to avoid reflexology. Acute injuries also must be handled with care. Anyone with active blood clots should avoid rubbing near the area of the clot. Burns, wounds, gout and infections to the hands or feet should also limit the use of reflexology. Lower extremity swelling or chronic skin changes that are a result of vascular problems to the feet should also limit this form of therapy. Recent removal of a cancerous tumor or other surgical procedures, such as wart removal, also make reflexology inadvisable. There is some evidence that rubbing of the feet during pregnancy might stimulate contractions, and so should be avoided in the later stages of pregnancy.