How to distinguish between infantile hemangiomas and birthmarks?

Patient's question:

Weekend, I went to the countryside for a spring outing with friends. Along the way, we passed by a farmer's house. Under the big tree in the yard, a young mother was holding a three- or four-month-old baby in her arms, basking in the sun. Everyone playfully interacted with the baby. Perhaps because they were all young mothers, a mother with a two-year-old noticed a red spot from a mosquito bite on the baby's nostril. She said it was a birthmark.

Doctor's answer:

Hello! Hemangioma is a relatively common tumor in children. About 75% of children are born with it, while some appear one week or half a month later. It is generally orange-red or pale red in color and does not protrude above the skin surface. Light pressure will cause it to fade, and it may darken during crying. The symptoms of birthmarks do not fade with light pressure or when the child cries. Parents can differentiate based on these characteristics. If it is a hemangioma, it is recommended to go to the hospital promptly and follow the doctor's advice on whether treatment is needed. Do not assume that all hemangiomas will resolve on their own.

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