Brief Answer:
Oral antibiotic for a week; topical antibacterial; ketoconazole shampoo

Detailed Answer:
Hello . Thank you for writing to us at healcaremagic. I have gone through your query and I have also reviewed the image.

I can see an illdefined red area on scalp and seems to be seborrheic dermatitis. Probably this area has developed a secondary bacterial infection and has therefore become sore and discomforting.

If I was the treating doctor i would suggest a course of an oral antibiotic for a week. e.g amoxicillin or cephalexin. Topically you may use an antibacterial ointment e.g either mupirocin or neosporin. These would take care of bacterial infection.
You may also take an oral antiinflammatory e.g ibuprofen, once or twice daily for symptomatic relief from pain.
Since the underlying cause is seborrheic dermatitis therefore you must also use an antifungal shampoo e.g Nizral (ketoconazole) shampoo, regularly.

Regards

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Brief Answer:
Use an otc ointment and otc antifungal shampoo

Detailed Answer:
Hi.

You may use an otc topical antibacterial like Neosporin or polysporin initially along with an otc shampoo i.e ask for ketoconazole shampoo at pharmacy as suggested. Hopefully it will work for a localised area of involvement.

Regards

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Brief Answer:
You are welcome

Detailed Answer:
Thank you for writing to us

Regards

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