I am so glad i found this thread ive been panicking and searching gooogle for answers convinced its something serious. I have coeliac so i on a gluten free diet now diagnosed in Dec 2020,my b12 was fairly low and was taking tablets but lockdown and self isolating ive not been able to get any so i havent been taking any and ive also been trying to eat better on a slimming diet. Im thinking this could be related to this dent at the back of my head slightly off to the right/middle crown area. My hair also hurts around it and if i press it its painful and i get headache. Im yet to contact the doctors as i cant go with the current lockdown in place and having to shield,is this something i can keep an eye on or should i be ringing asap for scan/blood tests. Thanks everyone its so good to know im not alone and others are having the same issue which seems something not to worry about too much,i was scared stiff,i worry about anything health wise being a mum of 2. Im 34 and only recently noticed this,it is roughly 1cm and about the size of my fingertip. Any advice would be great,much appreciated or anyone with coeliac or gluten issues i would be interested to know if it is linked. Kind regards x