What is mosaicism?

Mosaicism is when your body has cells that look different from each other, like a patchwork quilt.

Imagine you have a cookie jar full of cookies. Most of them are chocolate chip, but some have sprinkles and others have nuts. All the cookies come from the same jar, but they ended up looking different because something changed when they were made. That's kind of what happens with mosaicism in your body.

When you're born, your cells usually all have the same set of instructions, like a recipe for baking cookies. But sometimes, during early development, a cell gets a new recipe, maybe from a tiny mistake or a little mix-up. Then, every time that cell divides, its children get the new recipe too. So, you end up with patches of cells that look different from the rest.

It’s like having a cookie jar where some cookies have sprinkles and others don’t, all made from the same batch, but just a few got a little extra something in the mix. Mosaicism is when your body has cells that look different from each other, like a patchwork quilt.

Imagine you have a cookie jar full of cookies. Most of them are chocolate chip, but some have sprinkles and others have nuts. All the cookies come from the same jar, but they ended up looking different because something changed when they were made. That's kind of what happens with mosaicism in your body.