Instead of the liquid chemical, a special type of foam is injected into the affected vein. The injection is guided to the vein using an ultrasound scan. Although this treatment has been proven to be effective, it can cause side effects, including: 1  blood clots in other leg veins, 2  headaches, 3  fainting, and. To ease symptoms. 2  If your varicose veins are causing you pain or discomfort. 3  Complications. 4  You may require treatment if your varicose veins cause you to develop complications, such as leg ulcers, swelling or skin discolouration. 5  Cosmetic reasons.
Pheochromocytoma and irregular blood pressure. A pheochromocytoma can cause wild fluctuations in blood pressure with normal blood pressure in between spells. This can make the condition more difficult to detect.The graph shows a nine-day period of short, irregular bursts in blood pressure due to a pheochromocytoma. pheochromocytoma can cause wild fluctuations in blood pressure with normal blood pressure in between spells. This can make the condition more difficult to detect.
A single lower-than-normal reading is not cause for alarm if you are not experiencing any other symptoms or problems. However, a sudden drop in blood pressure --- even a change of just 20 mm Hg --- can cause dizziness or fainting. Sometimes a rapid decrease in blood pressure can indicate an underlying problem such as: 1  Uncontrolled bleeding. 2  Severe infections.