Children may hardly notice head lice or may have only a vague scalp irritation in the beginning. It’s easiest to spot them at the neckline and behind the ears. The adult louse feeds on blood by biting into the scalp every four hours or so. A lice infestation can be asymptomatic for two months before itchiness of the scalp occurs. Itchy papules develop and these often become infected from scratching, resulting in infection of the scalp. The lymph nodes at the back of the head and in the neck are frequently enlarged. The eyelids can also be involved.
In adolescents, pubic and axillary hair may be infested.
Other symptoms include: a tickling sensation like something is crawling in your hair, intense itching that causes red bumps due to an allergic reaction to the saliva that lice inject while feeding, and lice nits that resemble tiny buds which can be mistaken for dandruff. Continue reading
What is Nicotine
Nicotine is a potent parasympathomimetic alkaloid found in the nightshade family of plants (Solanaceae) and a stimulant drug. It is a nicotinic acetylcholine receptor agonist. It is made in the roots and accumulates in the leaves of the plants. It constitutes approximately of the dry weight of tobacco and is present in the range of 2–7 µg/kg of various edible plants. It functions as an antiherbivore chemical; therefore, nicotine was widely used as an insecticide in the past and nicotine analogs such as imidacloprid are currently widely used.
Nicotine is one of the most powerful substances in cigarettes that millions of people are addicted to. Here are some tips in flushing your system and body from nicotine so you can totally give up cigarette Smoking and the many health damage it causes to your heart, lungs and liver
The tobacco plant is a member of the Solanaceae family. Biosynthesis of nicotine occurs in the roots. It is carried to the leaves for storage. The purpose of nicotine is to help protect the plant from insects.
SHANGHAI: China’s deadly outbreak of H7N9 bird flu has spread to the central province of Hunan, local health authorities said Saturday, the third announcement in three days of a case in a new location.
A 64-year-old woman in Shaoyang City, who developed a fever four days after coming into contact with poultry, was confirmed to have the virus, the Xinhua state news agency reported.
It follows the first confirmed cases in the eastern province of Jiangxi on Thursday and the southeastern province of Fujian on Friday.
More than 110 people in mainland China have been confirmed with H7N9, with 23 deaths, since the government announced on March 31 that the virus had been found in humans. Most cases have been confined to eastern China. The island of Taiwan has also reported one case.
The uncertainty adds to challenges the Chinese government is facing in trying to control the spread of the H7N9 bird flu virus that has already killed 17 people and infected 66 others in the country, mostly along the eastern seaboard.
“To me, the biggest question is the link between the virus in birds and how it gets to humans. This is not clear,” said Dr. Bai Chunxue, a prominent respiratory expert in Shanghai who treated one of the first cases of the virus, a family cluster involving an 87-year-old man and his two sons. Bai said other family members he talked to said the patients had no contact with birds or poultry.
“So this is indeed a mystery,” Bai said in a telephone interview.
Theories among experts about how the virus may be spreading run from the ways poultry is slaughtered in markets to infected droppings from migratory birds. Continue reading
People who suffer cardiac arrest – in which the heart stops beating – were less likely to die in subsequent years when bystanders performed cardiopulmonary resuscitation using chest compressions only, a new study found.
That builds on previous research that found no short-term survival differences in adult victims given compression-only CPR instead of the standard kind, which includes mouth-to-mouth resuscitation.
And it supports an American Heart Association recommendation that the simpler form of CPR is appropriate for bystanders, who may feel so intimidated by the prospect of combining chest compressions with rescue breathing that they give no aid at all. Continue reading
Allergy can be described as a malfunction of the human immune system causing a violent reaction against normally harmless substances in our natural environment. In this context, such substances are generally referred to as “allergens”. The reaction creates an inflammation which, in turn, can lead to a variety of symptoms such as hay fever, eczema, asthma and other conditions popularly referred to as allergies.
Air Conditioning and Allergies
To help alleviate problems with pollen, molds and dust mites, air condition your house and car and, if possible, add an air cleaner to your central air conditioner.
Anaphylactic shock, the most severe allergic reaction, is most commonly associated with bee or fire ant stings. If welts (hives) erupt following a sting, this is a warning flag to seek prompt medical attention.