Heya there young lady...
Note your problem that has been clearly described.
Thank you for a clear pic too.
Off the cuff, going by your history, description and pic, a diagnosis of a condition we allude to as Pityriasis Rosea is probably in order.
Having said that, it would help greatly if we could have more details on history especially if this has occurred earlier in the winter or dry season, any genetic history of dry skin, any history (personal or family) of conditions like hypothyroidism or dry skin issues, marital status &/or history of sexual activity, allergies if any etc
A medical & psychological work-up will also be beneficial together with some more clear pics.
Next Steps
An INSTANT CONSULTATION or an ONLINE Consultation ASAP would be my recommendation.
Health Tips
Avoid OTC products and home remedies
Moisturize well post 🚿 atop wet 💦 skin for the dryness...do not rub.
Hydration is important.
Stress busters (if stress considered an issue) especially isometric exercises eg. swimming, sex, yoga depending on your preferences and inclination.