Millions of people suffer peripheral pain and other troubling sensations accompanying diseases as varied as diabetes, AIDS, shingles and arthritis. Cancer patients also often suffer these so-called peripheral neuropathies because of their therapies. For afflicted patients, a new review suggests, although not strongly, that four of 10 people could experience some pain relief from topical capsaicin cream. Capsaicin is the active component of chili peppers.