You are prone to allergy
You had contact allergic dermatitis
So, it seems that the gel you applied at PT, might induce skin lesions.
Now you avoid to apply it.
And, take ashort course of steroids
in tappering dose..
Take anti histaminics ,till itching is relieved.
Apply mild steroid cream with antibiotic.
Avoid soap bath.
You can use dettol
liquid for bath.
Avoid stress and worries.
I hope you got my answer.
Dr. Ilyas Patel MD