Thanks for your query and clear picture.
Yes, this looks like Seborrheic Dermatitis.
I would suggest you the following:
-The first Principle is do not apply anything locally.
-Take therapeutic dose of Vitamin A and D orally under prescription of your Doctor.
- Oral Steroids and antihistamines wherever required.
-Avoid applying soaps or any irritants to this skin.
-Take an opinion of another Dermatologist.
I hope this helps.
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