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Smoking is the inhalation of the smoke of burning tobacco encased in cigarettes, pipes, and cigars. Casual smoking is the act of smoking only occasionally, usually in a social situation or to relieve stress . A smoking habit is a physical addictio...
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Question: What are the negative effects of smoking? Answer: Smokers have an increased risk of the following: Lung cancer; Lung disease; Heart attack; Heart disease; Hypertension; Stroke; Oral cancer; Bladder cancer; Pancreatic cancer; Cervical can...
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Use of cigarettes and other tobacco products to engage in a habit that almost always leads to addiction. Every day 3,000 young people light up their first cigarette; every year a million teenagers become regular smokers. Adolescent smoking has ris...
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Smoking is the inhalation of the smoke of burning tobacco encased in cigarettes, pipes, and cigars. Casual smoking is the act of smoking only occasionally, usually in a social situation or to relieve stress . A smoking habit is a physical addictio...
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Smoking is the inhalation of the smoke of burning tobacco that is used mostly in three forms: cigarettes, pipes, and cigars.
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Smoking is an important and preventable cause of death and illness. However, as more money has been spent on smoking cessation programs, the incidence of cigarette smoking has risen. In 2002, 48 percent of men and 12 percent of women in the world ...
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The common cold, also called a rhinovirus or coronavirus infection, is a viral infection of the upper respiratory system, including the nose, throat, sinuses, eustachian tubes, trachea, larynx, and bronchial tubes. Over 200 different viruses can c...
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The common cold generally involves a runny nose, nasal congestion, and sneezing. You may also have a sore throat, cough, headache, or other symptoms. Over 200 viruses can cause a cold.
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The common cold is a viral infection of the upper respiratory system , including the nose, throat, sinuses, eustachian tubes, trachea, larynx, and bronchial tubes. Although over 200 different viruses can cause a cold, 30–50% are caused by a group ...
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The common cold is a viral infection of the upper respiratory system, which includes the nose, throat, sinuses, eustachian tubes, trachea, larynx, and bronchial tubes. Although more than 200 different viruses can cause a cold, 30–50% are caused by...
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The common cold is a viral infection of the upper respiratory system, including the nose, throat, sinuses, eustachian tubes, trachea, larynx, and bronchial tubes. Although over 200 different viruses can cause a cold, 30–50% are caused by a group k...
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Most acute respiratory diseases are viral infections. They may be complicated by bacterial superinfections in which a bacterial infection develops after a viral infection. In such a situation, however, an illness would be of longer duration and no...
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The term "bronchitis" refers to the inflammation of medium-sized and large airways in the lung (bronchi). Bronchitis is distinguished from bronchiolitis (inflammation of small airways that lack cartilage and mucus-secreting glands in their walls) ...
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Bronchitis is inflammation of the main air passages to the lungs. Bronchitis may be short-lived (acute) or chronic, meaning that it lasts a long time and often recurs. See also: Chronic obstructive pulmonary disease (COPD)
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Bronchitis is an inflammation of the air passages between the nose and the lungs, including the windpipe, or trachea, and the larger air tubes called bronchi that bring air into the lungs from the trachea. When bronchitis is mild and brief in dura...
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A lower respiratory inflammation affecting the windpipe (trachea) and bronchial tubes. Bronchitis can be caused by viruses, bacteria, or allergies, and it occurs in both acute and chronic forms, the former usually caused by a virus and the latter ...
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Bronchitis is an inflammation of the air passages between the nose and the lungs, including the windpipe or trachea and the larger air tubes of the lung that bring air in from the trachea (bronchi). Bronchitis can either be of brief duration (acut...
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Bronchitis is an inflammation of the air passages between the nose and the lungs, including the windpipe or trachea and the larger air tubes of the lung that bring air in from the trachea (bronchi). Bronchitis can either be of brief duration (acut...
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Allergies are abnormal reactions of the immune system that occur in response to otherwise harmless substances.
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An allergy is an exaggerated immune response or reaction to substances that are generally not harmful. See also: Allergic conjunctivitis; Allergic reactions; Allergy testing; Allergy to mold, dander, dust; Atopic dermatitis (eczema; Contact dermat...
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Allergies are abnormal reactions of the immune system that occur in response to otherwise harmless substances.
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Physical allergies are allergic reactions to cold, sunlight, heat, or minor injury.
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Allergies are abnormal reactions of the immune system that occur in response to otherwise harmless substances.
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Allergies are abnormal reactions of the immune system that occur in response to otherwise harmless substances.
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Food allergies affect approximately 3 percent of children and 1 percent of adults in the United States. It is estimated that an even larger percentage of the population experiences problems with food intolerance. Worldwide, adverse reactions to fo...
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A hypersensitive response by the immune system to a foreign substance that is ordinarily harmless. Allergies account for more office visits to pediatricians than any other ailment, besides the common cold, and are responsible for more missed schoo...
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A specific allergy is not usually inherited, but your tendency to develop allergies is often passed down through families. If both parents have allergies, their child is likely to have allergies. However, your chance of developing allergies seems ...
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Usually referred to as the flu or grippe, influenza is a highly infectious respiratory disease. The disease is caused by certain strains of the influenza virus. When the virus is inhaled, it attacks cells in the upper respiratory tract, causing su...
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The flu is a contagious infection of the nose, throat, and lungs caused by the influenza virus.
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Usually referred to as the flu or grippe, influenza is a highly infectious respiratory disease. The disease is caused by certain strains of the influenza virus. When the virus is inhaled, it attacks cells in the upper respiratory tract, causing ty...
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Usually referred to as the flu or grippe, influenza is a highly infectious respiratory disease. Its name comes from the Italian word for "influence," because people in eighteenth-century Europe thought that the disease was caused by the influence ...
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Usually referred to as the flu or grippe, influenza is a highly infectious respiratory disease caused by certain strains of influenza virus. When the virus is inhaled it attacks cells in the upper respiratory tract causing typical flu symptoms suc...
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Influenza is a potentially severe acute respiratory illness caused by various strains of the influenza virus. The different strains all produce characteristic symptoms, and because major outbreaks are associated with increased mortality, occurrenc...
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The most common mechanism by which the lung is inoculated with pathogenic organisms is through microaspiration of oropharyngeal contents, a process that occurs in otherwise healthy individuals during sleep ( Chapter 82 ). Colonization of the oral pharynx with pathogenic organisms, such as Streptococcus pneumoniae ( Chapter 303 ), can thereby lead to delivery of sufficient quantities of organisms to infect the lung.
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Pneumonia is an infection of the lung, and can be caused by nearly any class of organism known to cause human infections. These include bacteria, viruses, fungi, and parasites. In the United States, pneumonia is the sixth most common disease leadi...
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Pneumonia is a respiratory condition in which there is inflammation of the lung. Community-acquired pneumonia refers to pneumonia in people who have not recently been in the hospital or another health care facility (nursing home, rehabilitation fa...
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Introduction Pneumonia has been recognized as a disease entity since remote times, with definitions of the condition traceable in ancient Greek, Roman, and Arabic writings. Definitive recognition of the etiologic role of microorganisms in pneumonia, and the identification of Streptococcus pneumoniae as the most common causative agent was only achieved roughly 120 years ago.
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The actual incidence of pneumonia in ambulatory patients is difficult to estimate because the etiologic agent is rarely identified except in clinical trials, and CAP is not currently considered a reportable disease. Each year in the United States there are 2 to 3 million cases of CAP.
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The following Clinical Topic Tour provides an overview of pneumococcal pneumonia and was adapted by materials published by the National Institute of Allergy and Infectious Diseases and the CDC.
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Pneumonia is a serious infection of the lung that impairs breathing. Small air sacs in the lung (alveoli) become filled with pus, mucus or other fluid, and cannot supply oxygen to circulating blood . Lobar pneumonia affects one section, or lobe, o...
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Pneumonia is an infection of the lungs that can be caused by nearly any class of organism known to cause human infections, including bacteria, viruses, fungi, and parasites. It results in an inflammatory response within the small air spaces of the...
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One of the most common pulmonary complications affecting cancer patients, pneumonia is a potentially life-threatening inflammation of one or both lungs.
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Pneumonia is an infection of the lung that can be caused by nearly any class of organism known to cause human infections . These include bacteria, amoebae, viruses, fungi, and parasites. In the United States, pneumonia is the sixth most common dis...
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Eosinophilic pneumonia is a group of diseases in which there is an above normal number of eosinophils in the lungs and blood.
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Pneumococcal pneumonia is a common but serious infection and inflammation of the lungs. It is caused by the bacterium Streptococcus pneumoniae .
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Pneumocystis pneumonia is a lung infection that occurs primarily in people with weakened immune systems—especially people who are HIV-positive. The disease agent is an organism whose biological classification is still uncertain. Pneumocystis carin...
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Chlamydial pneumonia refers to one of several types of pneumonia that can be caused by various types of the bacteria known as Chlamydia .
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Gastroesophageal reflux disease (GERD) is a condition in which the stomach contents (food or liquid) leak backwards from the stomach into the esophagus (the tube from the mouth to the stomach. This action can irritate the esophagus, causing heartb...
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Gastroesophageal reflux disease (GERD) is a gastric disorder which causes stomach acids to back up into the esophagus, the tube leading from the mouth to the stomach. This action causes pain , which is often called heartburn. GERD can disrupt slee...
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