Hello doctor, My son is 10 months old and he has red patches on his back head and head is not flat on that area.His pediatrician said it is nothing, may be birth mark, where I didt notice until he shave his hair. Now, I have a guilt that in his 5th month he fell down from the coat, nothing happened within 5min he is fine. My concern is because of that is this mark or something serious. pls do reply. He is reaching his milestone perfectly, very active boy still now no issues. just want to know about red mark on his head. pic attached below.