What determines where a rash manifests? present 1 yr, not helped by antibiotics. etiology unknown; possibly leukemia, pancreatic dysfunction or dh.

Needs medical examin: Skin rashes are common but most of them disappear within 1-2 weeks. If the rash is persisting, then there is a cause which will likely require treatment. For this you need to see a skin specialist (Dermatologist) who can check it for you and make a correct diagnosis and prescribe treatment. It can get more complicated if you leave it alone and un-diagnosed /untreated.