Diseases & conditions A-Z List
Diseases & Conditions A-Z List - «C»:
Carotid artery surgery
Carotid artery surgery is a procedure to restore proper blood flow to the brain.
You have an artery on each side of your neck called the carotid artery. This artery brings needed blood to your brain and face.
The blood flow in this artery can become partly or totally blocked by fatty ma...
Carotid artery surgery - discharge
You had carotid artery surgery to restore proper blood flow to your brain. Your surgeon made an incision in your neck over your carotid artery. A tube was put in place for blood to flow around the blocked area during your surgery. Your surgeon opened your carotid artery and carefully removed plaque ...
Carotid duplex is an ultrasound test that shows how well blood is flowing through the carotid arteries. The carotid arteries are located in the neck. They supply blood to the brain.
How the Test is Performed
The test is done in a vascular lab or radiology department of a hospital. You will be asked...
Carpal tunnel biopsy
Carpal tunnel biopsy is a test in which a small piece of tissue is removed from the carpal tunnel (part of the wrist).
How the Test is Performed
The skin of your wrist is scrubbed and injected with medicine that numbs the area. Through a small cut, a sample of tissue is removed from the carpal tunn...
Carpal tunnel release
Carpal tunnel release is surgery to treat carpal tunnel syndrome. Carpal tunnel syndrome is pain and weakness in the hand that is caused by pressure on the median nerve in the wrist.
The median nerve and the tendons that flex (or curl) your fingers go through a passage called the carpal...
Carpal tunnel syndrome
Carpal tunnel syndrome is pressure on the median nerve -- the nerve in the wrist that supplies feeling and movement to parts of the hand. It can lead to numbness, tingling, weakness, or muscle damage in the hand and fingers.
See also: Carpal tunnel release
The median nerve provides feeling ...
Carrying angle of the elbow - excessive
With the arms extended at the sides and the palms facing forward, the forearm and hands are normally slightly away from the body. This is the normal "carrying angle" of the elbow, which is 5 to 15 degrees. This angle permits the forearms to clear the hips in swinging movements during walking, and is...
Castor oil overdose
Castor oil is a yellowish liquid often used as a lubricant and in laxatives. This article discusses poisoning from swallowing a large amount (overdose) of castor oil.
This is for information only and not for use in the treatment or management of an actual poison exposure. If you have an exposure, yo...
Cat scratch disease
Cat scratch disease is a disease caused by bartonella bacteria. It is believed to be transmitted by cat scratches and bites, or exposure to cat saliva.
Cat scratch disease is caused by Bartonella henselae. The disease is spread through contact with an infected cat (a bite or scratch), or con...
A cataract is a cloudy area in the lens of the eye.
This article focuses on cataracts in adults. For information on cataracts in children, see: Congenital cataracts
The lens of the eye is normally clear. If the lens becomes cloudy, the condition is known as a cataract. Rarely, cataracts may...
Cataract removal is a procedure to remove a clouded lens (cataract) from the eye. Cataracts are removed to improve vision. The procedure almost always includes placing an artificial lens in the eye.
The normal lens of the eye is transparent (clear). As a cataract develops, the lens beco...
Cataracts - what to ask your doctor
You are having a procedure to remove a cataract, a cloudy area in the lens of your eye. This should help improve your vision.
Below are some questions you may want to ask your doctor or nurse to help you take care of your eye (or eyes, if you need to have two cataracts removed).
How will ...
Catecholamines - blood
Catecholamines are hormones produced by the adrenal glands, which are found on top of the kidneys. They are released into the blood during times of physical or emotional stress. The major catecholamines are dopamine, norepinephrine, and epinephrine (which used to be called adrenalin).
This article d...
Catecholamines - urine
Catecholamines are small molecules made by nerve tissue (including the brain) and the adrenal gland.
The major catecholamines are dopamine, norepinephrine, and epinephrine. These substances break down into other compounds, which leave your body through your urine.
A urine test can be done to measure...
Caterpillars (long, fuzzy, segmented insects) are unable to pierce the skin with their bite. However, their hairs may get into the skin or eyes, causing symptoms in the area where the hairs entered.
Problems also can occur if someone breathes in caterpillar hairs that have been released into the air...