I am 20 years of age.I am college going and a confident girl.I have no avne or pimples on my face(touch wood) but recently I have this red bumps on arms problem.I went to the dermatologist who checked me and said that it was something called keratosis.What is keratosis anyway?I want to know the etiology behind red bumps on arms?I want these red bumps to go away quickly.I would be very grateful to those who can help me.