Hello
Sudden bluish yellow discoloration appearing all of a sudden can be due to a bruise since it undergoes color changes. The blood under the skin which causes the discoloration of bruising should be totally reabsorbed by the body in three weeks or less.
If it persists then get an evaluation done from a dermatologist.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Sorry abt the typing error. 'Think' it is not thank!
I would thank of a Plane Xanthoma from the yellowish tinge (Relating to deposition of cholesterol in the skin), but then it could be a healing ecchymosis(Bruise) due to minor injury.Do consult your doc.
please if anybody knows what it cud be, let me know..worried!!