Thanks for the question. Pityriasis rosea is a condition that typically presents with scattered red rashes on the trunk and arms and thighs which may be scaly. The face is often spared in this condition.
There is a herald patch, often a larger patch that appears before the rest of the rashes, but this is not seen in all cases of pityriasis rosea.
The face is also a very unusual site to get the herald patch. So overall, it is really difficult to comment if your rash is truly pityriasis rosea without seeing your rashes.
It typically take about 4 to 8 weeks for the rash of pityriasis rosea to clear.
I would suggest that you visit your doctor again to confirm the diagnosis if you have any concerns.
