What’s this patch on my babies leg?

[Wingingthis]

Just noticed it as I was changing her nappy. Not dry skin, not sore, can’t find any other patches on her body. She’s 5 months old. Thank you!

My DD has a diamond shape on her tummy. She was 1 when I noticed, she was referred to the hospital for check ups to make sure it wasn't sinister. She's white and this diamond is very very white. Was told after hospital checks finished to get in touch if it changed shape or colour, 10 years on its still the same. Get the doctor to check it out obviously.

No medical professional so I’d say get it checked out, but it could just be pigmentation. My brother has a darker patch on his arm and has since a child.