Because the skin needs to be lubricated, it is covered with oil secreting glands known as sebaceous glands. If these glands become clogged with dirt, then bacteria begin growing inside and a pimple is the result. However, sebaceous glands can either become clogged and dry skin is caused or they can produce too much and cause oily skin. More often than not, problems with the sebaceous glands are due to poor diet and can usually be corrected rather easily. Skin Care Problems Due to Diabetes Believe it or not, even diabetes can cause you serious skin care problems.