Skin Issue on face and skalp. Problem.

As soon as I consume chocolate, chips or milk products I get white color pimples on my skull, when its in the process of happening it I suffer from terrible headache and loose concentration as well, sometime I black out. When most of the pimple become white or grow big the pain become less but my skull is full of it. I went to a Practo doc several years back. He told I have 3 issues. 1 Acute acne, severe seborrhea and another one I do not remember Due to my job issue that time i could not continue the treatment. My skull become super oily with on 2-3 hours after bath. I can not use normal shampoos. lot of acne marks and active acne is there all over My face. I am literally frustrated. And due to all this I am loosing my hair at very fast rate. I ride bike, putting on helmet is mandatory. Even when all is going good if I ride my bike only for even 1Km I will have same seborrhea and acne problem.