vết chàm

Trẻ sơ sinh có một vết chàm nhỏ màu xanh trên lưng.

Definition

1. Noun:
   • Mongolian spot: A congenital, flat, bluish-gray birthmark commonly found on the lower back or buttocks of infants, resulting from melanocytes (pigment cells) in the deep skin layers. It is medically benign and usually fades during childhood.

Usage Examples

• Noun:
  • Bác sĩ nói vết chàm trên lưng em bé là hoàn toàn bình thường. (The doctor said the Mongolian spot on the baby's back is completely normal.)
  • Vết chàm của con tôi đã mờ dần khi cháu lên năm. (My child's Mongolian spot faded gradually by age five.)

Advanced Usage

• The term is used specifically in pediatric and dermatological contexts to describe this particular type of birthmark and to distinguish it from bruising, which it can resemble.

Variants and Related Words

• Bớt chàm: A synonym often used interchangeably with "vết chàm."
  • Bớt chàm không cần điều trị. (A Mongolian spot does not require treatment.)

Synonyms

• Mongolian spot: The standard medical term in English.
• Congenital dermal melanocytosis: The formal medical name.
• Sacral spot: A descriptive term referring to its common location.

Related Idioms

• There are no common idioms specifically for "vết chàm." It is a straightforward medical term.