Usually affecting the mucous membranes of the nose and throat, diphtheria is a serious bacterial infection. Diphtheria, which may additionally infect the skin, commonly results in a sore throat, swollen glands, weakness and fever. But the hallmark sign is a thick, gray covering in the back of the throat that could cause difficulty breathing.
Diphtheria used to be a leading cause of death among children many years ago but ... more
Nearsightedness or myopia is a common vision condition in which near objects can be seen clearly, but the ones that are far away are indistinct.
People with severe nearsightedness can see clearly only objects that are just a few inches away, while those with mild nearsightedness may clearly see objects a few yards away. So, the degree of nearsightedness determines the focusing ability.
Nearsightedness tends to ... more
The type of cancer that begins in the cells of the liver is called liver cancer. The liver is a football-sized organ that sits in the upper right portion of the abdomen, beneath the diaphragm and above the stomach
One of the most common forms of cancer in the world is liver cancer.
Sometimes, cancer that occurs in the liver begins in another area of the body, such as the lung, breast or colon; this is called metastatic cancer. This ... more
The infection of the breast tissue that causes swelling, pain and redness of the breast is called mastitis. Although in rare circumstances mastitis can occur outside of lactation, but this condition most commonly affects women who are breast-feeding.
Within the first six weeks after birth (postpartum), mastitis often occurs, however, it can happen later during breast-feeding. Making it difficult to care for the baby, the ... more
The chronic eye disease that is marked by the deterioration of tissue in the part of the eye that's responsible for central vision is age-related macular degeneration. Blurred central vision or a blind spot may be caused in the center of the visual field because the macula gradually deteriorates in this condition. Adults age 50 and older may be affected by macular degeneration.
When new blood vessels grow and leak fluid ... more
The condition in which children develop normally until age 3 or 4, and then demonstrate a severe loss of social, communication and other skills, is referred to as childhood disintegrative disorder or Heller's syndrome.
Sometimes, this disorder is confused with late-onset autism. This is because normal development followed by significant loss of language, play, social and motor skills, is involved in both conditions. Among several ... more