Thanks for sharing additional information.
As such, from the description and after looking at picture, It doesn't sound to be Poison Ivy.
Because, Poison Ivy is associated with- Itching, Swelling, Blister formation.
I am sure, this is not related with Poison Ivy.
Possible reason for such symptoms are-
Irritant Contact Dermatitis. This can cause dry, non-itchy eruption. Certain chemicals like detergents or other cleaning and industrial products can cause this contact dermatitis.
This could also be related with- Heat rash. It is one of the most common causes of red spots on skin that may or may not itch.
Heat rashes are caused due to trapping of sweat below the skin surface due to clogged sweat ducts.
Trigger factors include increased sweating, wearing tight clothes, excessive creases on skin, and prolonged sun exposure.
You should check that you have made any recent changes of soaps, cosmetics, and, detergents.
Such symptoms could also occur with Petechiae/blood spots
For the time, you can take a long oatmeal bath.
Application of natural aloe vera juice would be helpful.
You can start with OTC Zyrtec once a day for next 2 weeks.
After bathing, it is important to trap the moisture in the skin by applying lubricating cream on the skin while it is damp. Use less soap than usual. Avoid prolonged standing or walking. Leg elevation during rest.
You can follow above measures, and would get great help.
Hope this helped
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