Piriton is my last resort med when all else has failed. Last resort because although it does work to stop skin rashes, it sends me to sleep.
Investigations by dermatology and immunology have determined the cause of my skin flares, and it is not due to diabetes. More an overactive immune system.
An individual regime for me has been prescribed alternatives to using soap for washing and bathing, followed by use of a prescribed moisturising gel while skin is still wet, and application of the same gel to skin morning and night.
In addition, as a prevention measure, prescribed daily fexofenadine, in doses that can be increased if needed, plus montelukast, neither of these make me sleepy. If the preventative regime doesn’t work (though it generally does) I am advised to use piriton tablets for a few days. If that fails I am prescribed steroid creams and sometimes a course of steroid tablets.
Main point is, don’t suffer in silence. Get advice from GP or pharmacy.