Why Do You Get Pityriasis Rosea Pityriasis Rosea- I Have It For The 3rd Time!!!?

Pityriasis Rosea- i have it for the 3rd time!!!? - why do you get pityriasis rosea

For those of you who know what it is .. Is that possible? "
They say that because it is a virus, you do not get twice. But I did. A year ago I had it to 2 Times and went to the doctor, and she was like, yeah, thats PR. And he said, he will be fine.
I asked if it is normal that twice .. and she was like, for sure. But three times? I just got a herald patch near my armpit, and scaly, as usual, and do not bite everybody. It is not very big, so I know it will be a few weeks before you get elsewhere.
Any intelligent person out there know why I am again and again?
Thank you a bunch!