Have any of you suffered this kind of itchy red small bumps?

Have any of you suffered this kind of itchy red small bumps ?
I have those on hands fingers elbow neck butts ( really swollen and red on butts )
Dermatologist said it is atopic eczema and gave me Isolone 20mg daily for 5 days and desloratadine at night and Pruri lotion and soap and moisturizer.
This is my second day and i do not get better but worse as the area become bigger and spreading.
No blood test done yet .
Any advice please ? Shall I do allergy test ? Change Dr?

Do you use scented detergent when you’re doing your laundry ?