Seborrheic dermatitis or dandruff is a chronic condition of the scalp. It can result in inflamed skin due to a collection of white blood cells and other inflammatory cells. The prescribed treatment for it may continue from a few weeks to several years.

In simple terms, Seborrheic dermatitis is a fungal infection, and antifungal creams and shampoos with ingredients such as ketoconazole, zinc pyrithrione, or selenium sulfide are generally the treatment prescribed.

Seborrheic dermatitis can present as burning or irritation of the scalp. There may be redness of the skin, severe dryness, and yellow, greasy scales.

A topical steroid cream may be prescribed when the disease is active, and there are severe symptoms. However, these steroid creams should not be used for long as they can cause side effects with continued use. Therefore, after initial use, you can continue treatment with antifungal products or other steroid-sparing creams.

In your case, it is better to consult the dermatologist who can evaluate the present condition and advise you on continuing or changing the prescribed lotion.

References:
Tucker D, Masood S. Seborrheic Dermatitis. [Updated 2021 Aug 3]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK551707/