What is a Stye (hordeolum) Stye, also known as a hordeolum, is a bump that forms on an eyelid. It may look like a pimple next to the eyelash. A stye can form inside the eyelid (internal stye) or outside the eyelid (external stye). A stye can cause redness, swelling, and pain on the eyelid. …
What is Subacute Sclerosing Panencephalitis (SSPE) Subacute sclerosing panencephalitis (SSPE) is a rare brain condition that develops years after a measles infection. It usually starts before age 20 and gets worse over time. SSPE causes brain swelling (encephalitis) and a loss of the protective covering that surrounds nerves (demyelination). SSPE leads to a gradual loss …
What is Subarachnoid Hemorrhage Subarachnoid hemorrhage is bleeding between the brain and the layer that covers the brain. The bleeding puts pressure on the brain, and it stops blood from going to some areas of the brain. If this bleeding is not treated, it may cause brain damage, stroke, or death. This is an emergency. …
Subchorionic Hematoma subchorionic hematoma is a gathering of blood between the outer wall of the embryo (chorion) and the inner wall of the womb (uterus). This condition can cause vaginal bleeding. If they cause little or no vaginal bleeding, early small hematomas usually shrink on their own and do not affect your baby or pregnancy. …
What is Subconjunctival Hemorrhage Subconjunctival hemorrhage is bleeding that happens between the white part of your eye (sclera) and the clear membrane that covers the outside of your eye (conjunctiva). There are many tiny blood vessels near the surface of your eye. A subconjunctival hemorrhage happens when one or more of these vessels breaks and …
What is a Subcutaneous Cardioverter Defibrillator Implantation (S-ICD) Subcutaneous implantable cardioverter defibrillator is a device that identifies and corrects abnormal heart rhythms. Subcutaneous cardioverter defibrillator implantation is a surgery to place an S-ICD under the skin in the chest. An S-ICD has a battery, a small computer (pulse generator), and a device that moves electrical …
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Subcutaneous Injection Instructions Using a Syringe and Vial A subcutaneous injection is a shot of medicine that is given into the layer of fat and tissue between skin and muscle. The injection is given with a single-use syringe and needle. The medicine comes in a bottle (vial). You will fill the syringe with medicine from …