Hello
I have gone through your question.
I can understand your concern.
The
rash can be a sign of an
allergic reaction.
In an allergic reaction, the immune system starts fighting substances that are usually harmless(certain foods,pollen or medicines ) as though these substances were trying to attack the body.
This overreaction can cause the rash.
In my opinion, the allergen or the cause of your rash probably is one of your medicines.
Usually most reactions happen soon after the contact with an allergen.
It is very important to identify the allergen and avoid further contact with it.
You take a polipharmacy.Potentially each one of your 7 drugs can be the culpit and the rebound rash is a sign that you are again in contact with your allergen.
For this reason my answer is :Yes,you should call your doctor and refer to him your problem. It is very important to investigate about the possible cause/medicine that trigger your allergic reaction and to avoid the contact with it.
Anyway,i want to say that you should stay calm because rash is a symptom of a mild allergic reaction.
You don't have symptoms of a severe allergic reaction,so your situation is not life threatening.So,don't
stress and contact your doctor.
Hope i have clarified your doubts.
If you have other questions,feel free and ask.
Take care.