Nitrates widen blood vessels, and Viagra increases that effect. Mixing the two can cause your blood pressure to drop drastically. A sudden drop in blood pressure can make you pass out, and you may die if your blood pressure stays too low for too long.
3 doctors agreed: 1  Allergic dhiners: She has what's known as allergic shiners. It it caused by blood shimmering through her fine skin. 2  Cold compress: Purple or blue marks under eyes may be due to blood vessels under eyes. Cold ice packs might help marks decrease by contracting the vessels. What causes : rapid appearance of brown spots on nose, under eyes, forehead. Feet cold and turn purple, sore breasts, acid reflux, popping joints? Dr. Jan Lei Iwata Dr. Iwata
Red eyes happen when the blood vessels on the surface of the eye (the conjunctiva) become irritated, which causes them to become enlarged and dilated. This can sometimes be a medical emergency. One of the most common causes of red eyes are allergens and environmental irritants such as pet dander, pollen, dust, wind, dry air, and sun. People who do not get enough sleep will also experience red eyes. Eye infections and inflammations can cause red eyes, as well as other symptoms such as itching, discharge, pain, and blurred vision. If a contact lens wearer does not keep their lenses clean and disinfected, or wears them for too long, they can experience red eyes.