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
Sometimes called âallergic shinersâ, dark under-eye circles are usually caused by allergies. When the nose is blocked, blood might not be able to flow through. This expands and darkens the veins that drain from the eyes to the nose. Congestion can also cause blood to sit in the area under the eyes. Often, doctors cannot find a cause for your childâs under-eye circles. Other causes may include: chronic sinus infections. enlarged adenoidsâ, causing nose blockage. eczema. heredity: dark under-eye circles can run in families.