Hello I have gone through your question and appreciate Your concern . Keloids are formed bcz of overgrown scar tissue. Very difficult to treat as having tendency of recurrence. U asked for treatment other than surgery and intralesional injections. Radiotherapy have been shown good result. But there are concern whether it should be used for benign Condition Like keloid. Topical steroid creams will reduce itching. It is Better to consult dermatogist and get examined. Thanks. U can write me back for any query.