53 year old male, c/o rashes all over the body with hyperpigmentation, itching and oozing on some spots. Since 6 yrs. k/c/o diabetes on medication.

He has a habit of smoking and drinking. Normal urine reports. some abnormal serum reports: serum Ig E- 2117 IU/ml SGOT :78.5U/l SGPT:57.5u/l  what could be the diagnosis and treatment?