Without any triggers, I get red splashes on my upper chest and sides of the face. Why?

Hi doctor,

I am 20 years old. I get red splashes on my upper chest and sides of the face next to my cheeks usually in the mid-day and it extends to the night also. It makes my face very hot. Before a year, it got stopped and it came back again. I notice them when I eat or feel stressed. After that, I realized that it happens suddenly without a reason. I am taking medication for gastrointestinal issues and Omega 3 vitamins. My blood pressure becomes high sometimes. But it is better now and I have a hiatal hernia. When I start to have redness, I have them for thirty minutes to two hours. It does not cause itching and when my chest becomes red without my face, I do not know them until I remove my shirt. My nose does not show redness. I have redness on the sides of the face next to my cheeks and on my chest. I am attaching the photos taken before eight months and photos taken recently. Though they are not itchy and bumpy, they seem to be hot, and sometimes I do not feel it unless I remove my shirt.

Thank you doctor,

Other than feeling uncomfortable, when I get this flushing and heat on my face, I think that it should be not carcinoid syndrome. I have done a CT scan of the abdomen and pelvis. I am waiting for the results of the 24-hour urine test called 5-HIAA. When I was talking to my dermatologist about my present suffering, my upper chest got some red spots. He gave me Neorin and I did not use it.