Little red spots that blanch with pressure

[PedroPrado]

During the last months i have noticed that i get some pin point red dots on my arms.

- They appear in a group of aprox. 10 dots.
- The episode last 30 minutes aprox.
- The location seems to change.
- Always (or at least the great mayority of the time) is just ONE group per episode, so is very rare that at the same time i develope more than 1 group of dots.
- There are 2-3 episodes per week (that i notice... maybe there are more because im not looking all the time and the episodes last only 30 minutes).
- Completely flat, they dont hurt or itch.
- They blanch when pressure is applied.

At first i thought it was petechiae, but I read that petechiae DO NOT blanch with pressure, so thats the reason why im asking because i cannot find anything on the internet.

Thanks in advance.

[Bhupinder Kaur, MD]

Hello,
Such an itchy rash can be due to viral rashes or hives. Hives (medically known as urticaria) are red, itchy, raised areas of skin that appear in varying shapes and sizes. They have a tendency to change size rapidly and to move around, disappearing in one place and reappearing in other places, often in a matter of hours.

Many cases of hives are "idiopathic," meaning no cause is known. Others may be triggered by viral infections or medications.
So check out the medications, clothes or toiletries that you are using as these may be triggering the hives.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.

[PedroPrado]

Im very sorry, but i said "Completely flat, they dont hurt or itch" and that "They blanch when pressure is applied", so this is not an itchy rash as ou described.