I Am A 71 Y/o Male And Have Noticed That

I am a 71 y/o male and have noticed that my face is always flushed. It is normal temperature. I have high blood pressure that is being controlled via medication. I use CPAP nightly (face mask with moisture), I first took notice of this in Sept 2015 when I had my picture taken and again tonight using facebook video sharing. I also have narrow angle glaucoma being treated with Lumagin drops.
Thank you for your time.
Pappy