In anatomy, heterochromia refers to a difference in coloration, usually of the iris but also of hair or skin. Heterochromia is a result of the relative excess or lack of melanin (a pigment). It may be inherited, or caused by genetic mosaicism, disease, or injury.
Heterochromia of the eye (heterochromia iridis or heterochromia iridum; the common wrong form "heterochromia iridium" is not correct Latin) is of two kinds. In complete heterochromia, one iris is a different color from the other. In partial heterochromia or sectoral heterochromia, part of one iris is a different color from its remainder.
Heterochromia Iridium Causes
This is another physical sign where a good observation can pay dividend at the beginning of the examination.
The heterochromia is usually best seen in a well-lit environment. There are many causes of heterochromia iridis,
however, if the heterochromia forms the main part of the examination (for example 'Look at this patient's eye and do
the necessary examination') the most likely case is siderosis bulbi. Remember that the abnormal eye can be the eye
with either the darker as in siderosis bulbi or the lighter iris for example congenital Horner's syndrome or Fuchs'
Most cases of heterochromia are hereditary, caused by a disease or syndrome, or due to an injury. Sometimes one eye may change color following certain diseases or injuries.
Specific causes of eye color changes include:
Foreign object in the eye
Glaucoma, or some medications used to treat it
Mild inflammation affecting only one eye
Heterochromia iridium (two different-colored eyes within a single individual) and heterochromia iridis (a variety of color within a single iris) are relatively rare in humans and result from increased or decreased pigmentation of the iris. Most cases are isolated and sporadic, conceivably resulting from an alteration in the expression of the above-mentioned genes (and those we have yet to find) within the cells of the entire iris or even a particular section. Other potential causes include trauma around the time of birth or later in life, congenital pigmented nevi or even medications such as those used in the treatment of glaucoma. There are a few well-known syndromes of which heterochromia iridis is a striking feature. Waardenburg syndrome type 1, an autosomal dominant disorder caused by mutations in the PAX3 gene, is characterized by pigmentary disturbances of the iris, hair and skin, as well as congenital sensorineural hearing loss. But two different eye colors tends to be an isolated finding, which adds to the seemingly endless and fascinating variation in humans' physical characteristics.
Chrons disease symptoms in children Are you looking for chrons disease symptoms in children? Crohn's disease, also known as regional enteritis, is an inflammatory disease of the intestines that may affect any part of the gastrointestinal tract from mouth to anus, causing a wide variety of symptoms. It primarily causes abdominal pain, diarrhea (which may be bloody if inflammation is at its worst), vomiting, or weight loss, but may also cause complications outside the gastrointestinal tract such as skin rashes, arthritis, inflammation of the eye, tiredness, and lack of concentration.
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Cerebral Palsy Definition Sign and Treatment Cerebral Palsy Definition
Cerebral palsy (CP) is an umbrella term encompassing a group of non-progressive, non-contagious motor conditions that cause physical disability in human development, chiefly in the various areas of body movement.
Furosemide Side Effects and Dosage Furosemide is a loop diuretic (water pill) that prevents your body from absorbing too much salt, allowing the salt to instead be passed in your urine. Furosemide treats fluid retention in people with congestive heart failure, liver disease, or a kidney disorder such as nephrotic syndrome. This medication is also used to treat high blood pressure. Here is some stuff about Furosemide Side Effects and Dosage.
Crystal arthritis We are going to start out with gout, which is a thing to remember, it is a different disease for both male and female. Men tend to present at a younger age because of the association with uric acid and antigen levels in the blood. Some are between the ages of 35 and 55, is the average onset of gout in a male patient. Usually it presents as an acute podagra, which is the great toe or possibly a knee or an ankle depending upon the saturation of the soft tissue with uric acid.
How is an endometrial biopsy done An endometrial biopsy is often done in the doctorís office, usually without anesthesia. Although the procedure is quickly accomplished, it is painful.
If a physical does not have nitrous oxide available in his or her office, the patient can be given strong pain pills to use before coming to the office. A paracervical block can be also be used.
Endometriosis Symptoms Checklist and Sign Endometriosis is the abnormal growth of cells (endometrial cells) similar to those that form the inside of the uterus, but in a location outside of the uterus. Endometrial cells are cells that are shed each month during menstruation. The cells of endometriosis attach themselves to tissue outside the uterus and are called endometriosis implants. These implants are most commonly found on the ovaries, the Fallopian tubes, outer surfaces of the uterus or intestines, and on the surface lining of the pelvic cavity. They can also be found in the vagina, cervix, and bladder, although less commonly than other locations in the pelvis. Rarely, endometriosis implants can occur outside the pelvis, on the liver, in old surgery scars, and even in or around the lung or brain. Endometrial implants, while they can cause problems, are benign (not cancerous).
Over the counter ringworm treatment for kids Are you looking for over the counter ringworm treatment for kids? What will you do if you see red itchy patches on your body? It may be a case of ring worm infection. It may sound bad, but it can be cured easily with over-the-counter ringworm treatment.
Ringworm is a common skin infection caused by a fungus. The fungi feeds on the dead cells of skin and hair causing a ring of irritated itchy skin that looks like a worm. This may cause a rash and becomes sore. It may appear as scalp ring worm, body ringworm, face ring worm or groin ringworm.
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Frontier physician Andrew Taylor Still founded the profession as a radical rejection of the prevailing system of medical thought of the 19th century. Still's techniques relied heavily on the manipulation of joints and bones to diagnose and treat illness, and he called his practices "osteopathy". By the middle of the 20th century, the profession had moved closer to mainstream medicine, adopting modern public health and biomedical principles. American "osteopaths" became "osteopathic physicians", gradually achieving full practice rights as medical doctors in all 50 states, including serving in the US armed forces as physicians.
Pulmonary Hypoplasia and Congenital Renal Anomalies Caroline May, Anne Greenough
Arch Med Sci 2006; 2, 1: 6-9
The association of pulmonary hypoplasia with bilateral renal agenesis is well
recognised. It is important, however, for clinicians to be aware that pulmonary
hypoplasia does occur with other congenital renal anomalies and worsens the
Contraception Options for Women and Men Depot Medroxyprogesterone Acetate
Depot medroxyprogesterone acetate is an aqueous suspension of
microcrystals of progestin given by intramuscular injection every 11-13 weeks.
The approved contraceptive formulation has a concentration of 150 mg/mL; a
standard 1-cc dose is administered regardless of patient weight. Immediately
after injection, the site may be tamponaded, but massage must be avoided. Depot
medroxyprogesterone acetate is usually administered within the first 7 days of
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use a back-up method for the next 7 days. The first year typical failure rate is
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Detached retina causes and Treatment Normally, the retina is firmly attached to the choroid, and underlying layer of tissue that is rich in blood vessels. If blood or other fluid collects between the retina and the choroid, the retina may become partially or totally detached. Fluid from the vitreous cavity (the fluid-filled space behind the lens) may penetrate beneath the retina because of a small hole in the retina. Fluid leaking out of certain blood vessels in the eye may also penetrate beneath the retina to cause detachment.
How Is Allergy Produced, Role Of Contact Previous contact with or to a substance is necessary in order for a person to develop allergy to that substance. Such contact is not always easily demonstrable. For example, one may question the occurrence of previous contact in the case of baby who develops hives, eczema, or asthma upon ingesting cow milk for the first time. However, it may be demonstrated that the contact which produced sensitivity occurred before the baby as bon and was caused by enough the placental circulation. That contact plays a role in the development of allergy is demonstrated by the fact that allergic individuals living in Europe where there is no ragweed pollen never develop sensitivity to this pollen. In the same way there is no sensitivity to poison ivy among Eskimos who are not exposed to poison ivy.