Thanks for your question on Healthcare Magic.
I can understand your concern.
It is better to
consult dermatologist and get done clinical examination of that area.
Redness, soreness in buttock region is mostly due to infection and
gluteal abscess.
So clinical examination of local part is very important.
You may need antibiotic cream, antihistamine and anti inflammatory drugs for symptomatic relief.
Better to avoid self medicines.
Avoid perspiration and moisture in that area. Keep proper hygiene of gluteal area. You can use salty water and antibacterial soap toh wash that area.
Don't worry, you will be alright with all these.
But first diagnose and then start appropriate treatment.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.