I am a 53 yr. old woman.  The skin on my chest and sides of my neck is red but there is no itching.  When I press on it a white spot appears and then the red returns.  I have no other symptoms and its not a sunburn.  I typically have no skin problems but about a month and a half ago ago I took an antibiotic that caused an itchy rash and some eczema.  It took a few weeks for that rash to disappear.  However, that was a month ago.
Hello, I read carefully your query and understand your concern. The symptoms seem to be related to hives which is caused by an allergic reaction. I suggest to use antihistamine as such as Cetirizine 10 mg daily also suggest using a steroid cream for local application such as Dexamethasone cream. I recommend avoiding antibiotics that you used which might have cause the reaction. Hope my answer was helpful. If you have further queries feel free to contact me again. Kind regards!  Chat Doctor. 