Mongolian Blue Spots

Which led to a discussion on Mongolian Blue Spots. .

Professor Mo mentioned that he still has those blue spots (which you get at birth) right at his ass. Grace Lee said that her Mom mentioned that you usually get this blue spots when the doctor pulls you out from the womb of your Mother and the baby is held tightly, hence the blue marks.

According to Wikipedia,the Mongolian blue spot is a "birthmark is a blemish on the skin formed before birth. A little over 1 in 10 babies have a vascular birthmark.[1] They are part of the group of skin lesions known as "naevi". The exact cause of most birthmarks is unknown, but vascular birthmarks are not hereditary.[1][2]

They are soft raised swellings on the skin, often with a bright red surface, and some may look a bit like a strawberry. They are also known as "strawberry naevi" or as "infantile haemangiomas". They appear after birth, usually in the first month, and can occur anywhere on the skin. They are more of a problem when they affect the face. The cause of birthmarks is not fully understood. They are a benign overgrowth of blood vessels in the skin, and are made up of cells that usually form the inner lining of blood vessels. They are thought to occur as a result of a localized imbalance in factors controlling the development of blood vessels. Strawberry marks affect as many as one in ten newborn Caucasian babies but only about 1% of Asian and black children have them. They are particularly common in premature babies. Strawberry marks are not a sign of ill health, or associated with cancer."