Hi, i am rajesh, four days before i drank 2lts of pepsi and now i got 6 by 5cm bluish black hyperpigmented patch over the anterior aspect of my left thigh, i want to know whether is it due to pepsi intake. my age is 62yrs, ht 164cm, wt 65kg, i am an asthamatic and diabetic and taking prednisolone 10mg , gemer2 in morning and deriphylline150mg , ecosprin gold 20 forte in evening. so please reply and oblige thank you