I am diabetic for over 45 yrs .Now Im 81 yrs of age . Some months ago I was given januvia (sitagliptin) tablets . After taking it for 4 weeks I started developing dark patches on my skin, chest, back & arms with itching . Medicine was stopped as it was suspected to be allergy. After a couple of months, the diabetologist prescribed Trajenta  (linagliptin) to be taken one daily . This also aggravated the allergic skin patches causing severe itching & I discontinued the tablets . How to get rid of the dark                                                                                                      YYYY@YYYY
the black patches are  ChatDoctor.