Hi Dreamseeker9,

PTSD can come from intense pain experiences, operations, as well as life threatening events - it could well be that the child that was at some point was convinced that she was going to die form the pain..

Flashbacks take you back to that moment - as has been said you can see , hear, feel, taste , touch, smell things from that place, it can be one or all sensations - can start as onsensation and gradually build to all.

Grounding skills can help with this - they are ona sticky at the top of the screen -

also try to remind yourself this is a memory no matter how real it feels - you survived it then and you cna survive it now

take care P7