In general, lichen planus is not a harmful or fatal disease. It usually goes away by itself in time, but can persist for a long time, running into years, and this varies from patient to patient. The presence of skin lesions is not constant and may wax and wane over time. Oral lesions tend to last longer than those of the skin. Furthermore, even after going away completely, lichen planus may recur. As it heals, lichen planus often leaves a dark brown discoloration of the skin. Like the bumps themselves, these stains may eventually fade with time without treatment. When oral mucosa is affected by lichen planus, there is a slightly increased risk of developing oral cancer. If oral lichen planus is present, you should avoid the use of alcohol and tobacco products, which also increase the risk. Regular visits to the dermatologist or dentist — at least twice a year — for an oral cancer screening is recommended.
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Non-steroidal anti-inflammatory drugs (such as ibuprofen or naproxen ), and aspirin may decrease redness and pain.   Local anesthetics such as benzocaine , however, are contraindicated.  Schwellnus et al. states that topical steroids (such as hydrocortisone cream ) do not help with sunburns,  although the American Academy of Dermatology says they can be used on especially sore areas.  While lidocaine cream is often used as a sunburn treatment, there is little evidence for the effectiveness of such use.