Thanks for the input. Itching without skin rashes is a very difficult problem to uncover. In The causes may be divided into Exogenous or endogenous.
Exogenous causes are mainly contact dermatitis to a number of factors like cosmetics, detergents, dress, dust, chemicals, plants ; mites or fungal infections etc.
Endogenous causes: include skin diseases like urticaria, dry skin, or aquagenic pruritus; metabolic diseases like diabetes, endocrinal disturbances like hypo or hyperthyroidism; infections, Crohn's disease, renal failure, liver failure; even blood disorders like lymphomas, leukemias, polycythemia vera, multiple myeloma etc. Drug reaction is another important cause to be considered in your case.
This is not to frighten you. Just to show the need for further investigations. IIn your case it may just be skin dryness caused by diabetes mellitus or a combination of diabetes and due to some adverse effects of the medications that you have been taking. Try to remember whether the itching began after you started some new medication. Is your diabetes under control?
Here is what to do:
Take a long acting antihistamine like cetrizine 10 mg at night for a period of two weeks.
Have your diabetes under strict control.
Apply a moisturizing lotion like Nutraplus lotion or Eucerin body lotion immediately after bath.
Use only cotton clothes
Avoid hot spicy food and alcohol.
If the itching does not get relieved after about one month, you should see a physician to have a general physical and laboratory check up to rule out other internal causes.
If you need further clarification, please ask. __________________________________
My answer is for your personal information only. It should not be used as a substitute to visiting your doctor. No treatment should be tried without first consulting a doctor.