 [ Symptoms ] what is this red spot on my leg  hello i have an odd spot that appears on my leg randomly and goes away randomly the size varies from the size of a dime to about the size of a lime or or tennis ball no pain or anything just this red blotchy mark and i do not know what it is i have had this reoccurring mark for about a year or two now the spot is red along the outside and yellow on the inside with red discoloration in the middle in some spots giving it a blotchy look [ Disease ] your description is not sufficient information in order to make an accurate diagnosis i am sorry you will need to see a medical professional or a dermatologist for a hands on examination diagnosis and treatment three components that cannot be done blindly over the internet