My daughter (18 years old) has had a small patch on her knee and a very large stretch across her neck and chest. I've read a lot about it being age related but, obviously, she is too young for that to be a consideration. All of the things I have read about it relate to age or cancer and the doctor insists that it is just an allergic reaction but she has had the patches for a year now and doesn't use any of the same cosmetics or cleaning products that she did before as an attempt to get rid of it. They refuse to test her for anything dangerous beause she's 'too young' but I'm also worried about it. 

My daughter (18 years old) has had a small patch on her knee and a very large stretch across her neck and chest. I've read a lot about it being age related but, obviously, she is too young for that to be a consideration. All of the things I have read about it relate to age or cancer and the doctor insists that it is just an allergic reaction but she has had the patches for a year now and doesn't use any of the same cosmetics or cleaning products that she did before as an attempt to get rid of it. They refuse to test her for anything dangerous beause she's 'too young' but I'm also worried about it. 

(If anyone else is reading this I would appreciate a reply even if your not a doctor maybe just someone who is wise and can help!) Hey! I don't know if you will reply but worth a try! I am 16 and suffer with Heath anxiety mainly worse with cancers and heart problems but I have been on antidepressants for them recently and I have experienced petechiae just like your daughter but mine is more widespread! I have them all over my arms and a few on my legs and in my mouth. I obviously went straight to Google and started panicking that I have lukeamia! I don't know weather it is a reaction to sertraline/antidepressants or it's because I have covid curently and had Ibuprofen which your not actually meant to take with antidepressants because it apparently thins blood? I don't know I'm really not sure and still panicking. Maybe your daughter is on antidepressants too and that's why or I've heard birth control can cause it too (example the pill /minipill) hope she's well and it's not anything serious xx