Ihave had itchy arms legs to point of scratching til bleed over2years Dr did rast test ,showed high allergiy but no exact substance,notisced fatty swelling above centr of collar bone last week,not painful just looks as if put on weight,forgot to mention to GPas was distracted getting rast test result,he has put me on 5day steroid course for itching and stopped my statins for a week to see if this could be cause of itching could this fatty area be related to my unknown allergy