Itchy breasts

My boobs have been itching non-stop for a month or two now and it gets so bad sometimes I’ll have scratches on my nipples because they itch so bad

I told my mum and she told me my skin was probably dry so I should put moisturiser on them but it just irritates it more

I’m only 14 so it couldn’t be cancerous right?

Does anyone know what’s going on?