Tonight my scalp suddenly became oily, itchy, burning, flakes, and red bumps. it happened very fast but nothing was near my hair today. any ideas?

Look at history: You may have symptoms of burning itching, flakes, oily, red bumps today, but it may have been as a result of something that you've been using on your scalp recently. So a good history of the products you have used on your scalp for conditioning, shampoo, coloring, oil treatments can cause a dermatitis to show up. Best to have your doctor examine it, and recommend treatment.