I hit face with a door 36 hours ago. the red around my eye (under eyebrow) is now black & increased. should i be concerned. i have no other symptom.

Black eye: Is caused by bleeding beneath the skin around the eye. Sometimes a black eye indicates a more extensive injury, but most black eye injuries aren't serious. However, if you experience vision problems (double vision, blurring see your medical professional for evaluation.

Worrisome symptoms: Include decreased vision, double vision, increasing pain, not improving with rest, ice, compression, elevation, over the counter pain meds.