Final answer:
Mongolian spots, telangiectatic nevi, and petechiae on a baby's skin may indicate an underlying problem that requires notification of a physician.
Step-by-step explanation:
The marks on a baby's skin that may indicate an underlying problem that requires notification of a physician include:
- Mongolian spots on the back: These are large brown spots on the skin sprinkled with darker specks.
- Telangiectatic nevi on the nose or nape of the neck: These are small lesions with an irregular border and parts that appear red, white, blue, or blue-black.
- Petechiae scattered over the infant's body: These are small red or purple spots on the skin that result from blood leaking out of damaged vessels.
When these marks are present, it's important to notify a physician to rule out any underlying health issues.