DEFINITION A transient ischemic attack (TIA) is like a stroke, producing similar symptoms, but usually lasting only a few minutes and causing no permanent damage. Often called a ministroke, a transient ischemic attack may be a warning. About 1…
DEFINITION Transposition of the great arteries is a serious but rare heart defect present at birth (congenital), in which the two main arteries leaving the heart are reversed (transposed). Transposition of the great arteries changes the way blood circulates through…
DEFINITION At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care. Learn more. Request an appointment. Mayo Clinic in Minnesota has been recognized…
DEFINITION Orthostatic hypotension — also called postural hypotension — is a form of low blood pressure that happens when you stand up from sitting or lying down. Orthostatic hypotension can make you feel dizzy or lightheaded, and maybe even faint.…
DEFINITION Osgood-Schlatter disease can cause a painful lump below the kneecap in children and adolescents experiencing growth spurts during puberty. Osgood-Schlatter disease occurs most often in children who participate in sports that involve running, jumping and swift changes of direction…
DEFINITION Iritis (i-RIE-tis) is inflammation that affects your eye’s iris, the colored ring surrounding your pupil. The iris is a part of the middle layer of the eye (uvea), so iritis is a type of uveitis, sometimes called anterior uveitis.…
DEFINITION Pink eye (conjunctivitis) is an inflammation or infection of the transparent membrane (conjunctiva) that lines your eyelid and covers the white part of your eyeball. When small blood vessels in the conjunctiva become inflamed, they’re more visible. This is…
DEFINITION Uveitis is a form of eye inflammation. It affects the middle layer of tissue in the eye wall (uvea). Uveitis (u-vee-I-tis) warning signs often come on suddenly and get worse quickly. They include eye redness, pain and blurred…
DEFINITION Blepharitis (blef-uh-RYE-tis) is inflammation of the eyelids. Blepharitis usually involves the part of the eyelid where the eyelashes grow and affects both eyelids. Blepharitis commonly occurs when tiny oil glands located near the base of the eyelashes become clogged.…
DEFINITION A corneal abrasion is a superficial scratch on the clear, protective “window” at the front of your eye (cornea). Your cornea can be scratched by contact with dust, dirt, sand, wood shavings, metal particles, contact lenses or even the…
DEFINITION Botulism is a rare but serious condition caused by toxins from bacteria called Clostridium botulinum. Botulism comes in several forms, with the three main forms being: Infant botulism. This most common form of botulism…
DEFINITION Acute sinusitis (acute rhinosinusitis) causes the cavities around your nasal passages (sinuses) to become inflamed and swollen. This interferes with drainage and causes mucus to build up. With acute sinusitis, it may be difficult to breathe through your…