Brief Answer:
Seborrheic dermatitis; topical moderately potent steroid cream

Detailed Answer:
Hello. Thank you for writing to us.

I have gone through your query and I have also reviewed the Image.

I can see a moist, red, patch in the fold behind ear.
This is seborrheic dermatitis which can present as itching, redness, scaling Or a moist patch with sticky discharge.
Scalp, retroauricular area, face etc can be affected with seborrheic dermatitis

Seborrheic dermatitis is a steroid responsive skin condition.
If I was the treating doctor I would suggest you to use a moderately potent topical steroid for her e.g fluticasone propionate 0.05% cream, twice daily, for a few days. This should make it fine within a few days.

I suggest that you take her to a dermatologist in your vicinity for a clinical examination and for the needful.
Topical steroids are prescription medications and should always be used under the supervision of a dermatologist.
Topical steroids should be used only for the recommended duration as advised by your dermatologist.
Self medications and overuse may cause side effects of steroid abuse.

Regards

---

Brief Answer:
I suggest Oral antibiotics & topical antibiotic cream for Infection

Detailed Answer:
Hi.

Thank you.

As compared to the earlier Image, in this Image the patch looks more wet and I can also see some yellowish/ honey colored crusting at the edges of the red, raw patch which suggests that the patch could also be due to a bacterial skin infection i.e Impetigo, rather than primarily due to seborrheic dermatitis.

'Impetigo' is a superficial bacterial infection which is characterized by raw areas/ erosions, oozing and honey colored crusting.

Impetigo/ bacterial infection at this site could be either primary due to hot weather and sweaty conditions which favor bacterial skin infections OR it could also be a superimposed bacterial infection on underlying seborrheic dermatitis.

Therefore after reviewing this Image I would rather suggest a slightly different line of treatment.
My treatment would first be directed towards resolving bacterial infection/ Impetigo with Oral antibiotic syrup e.g Syp. Augmentin for 5 days. Whether it is primary Impetigo Or superimposed bacterial skin on underlying seborrheic dermatitis, it does not matter at present.

In addition to Oral antibiotics you may also use a topical antibacterial cream e.g soframycin cream or mupirocin ointment, twice daily, at this site, rather than using a topical steroid cream which I had suggested in my previous reply.

Together these would dry up the infection.

Regards

---