Is It OK to Tattoo a Baby?

This breaks my heart ... as a mother of four kids, one of whom was born 2 months preemie and one of whom needed seizure medication as an infant, I can understand the fear as well as the struggle.

A Reddit user known as Thrwydad posted this, looking for advice:

'My wife and I have two very premature twin boys. There is no difference between them apart from Aaron having very serious health issues, requiring him to have medication every 4 hours. If he doesn't have his medication it leads to significant consequences. The boys are 12 months old and are completely identical. Even me and my wife can't tell them apart and have been drawing on Adams arm every day with permanent marker (Aaron has very sensitive skin and we don't want to irritate it). This backfired when the twins were at grandmas and after a bath rubbed off the texts, grandma accidentally gave Aaron's medication to Adam. Adam ended up very sick and Aaron in hospital for a week. This is a serious extreme situation and I don't want to take this risk again. We have had other mix ups with the boys but it has never wound up this bad.

We have tried other things but nothing else worked as well as the texts for numerous reasons-nail polish, bracelet, anklets, specific color clothes for each boy, shaving ones head and having the others long..

We are after a more permanent solution. I read online about someone tattooing a single dot on one of their twins and also about piercing ears. I really hate to say it but we are here. I need to do something permanent. I could have lost both my sons last weekend and I'm desperate. I am only after permanent solutions. Believe me when I say we have tried everything else before and it didn't work. Please help me. I don't want to lose my boy.'

In this situation, do you think tattooing the twin is appropriate?