As with any treatment for alopecia areata, the success rate for intralesional corticosteroids depends on the person. Most patients with one or a few small patches do very well with intralesional corticosteroids. The larger the area of hair loss the less likely injections alone will be successful and other treatments may have to be used in conjunction.  When hair loss involves more than 50% of the scalp area, intralesional corticosteroids may no longer be considered, and more aggressive treatments such as DPCP/DCP or oral therapies may be offered.