D.N.
My son gets a dry patch on his forehead. This is from leaning against the kitchen table while he is reading. Of course, how he can even see the words is beyond me because he is blocking out the light. He will put his forehead against the edge of the table and have the book in his lap. Sometimes he even gets a little indentation from the table making it look like he has a dent in his forhead for a day or 2.