About.com explains that there are five main causes for pneumonia and at least one of them is contagious. Pneumonia is an inflammation of lung tissue produced by a viral, bacterial, fungal or mycoplasma infection. While viral and bacterial infections do not cause pneumonia in other people, mycoplasma pneumonias are contagious.
Both WebMD and About.com mention that pneumonia appears more frequently in people with a weak or compromised immune system. Accordingly, cigarette smokers, alcoholics, the elderly, young children and people suffering from other diseases are at a greater risk. Viruses and bacteria may spread and cause respiratory problems even in healthy people, but these don't usually develop into pneumonia. Finally, chemical pneumonia is never contagious.Learn More
According to Mayo Clinic, there is no single cause of kidney stones; however, there are several factors that increase the risk of their development. These include a diet high in sodium, not drinking enough water and a family history of kidney stones.Full Answer >
A rehabilitation program that focuses on gradual revival of range of motion through exercise is recommended after a knee surgery, says About.com. Such a program should aim to regain full extension and flexion of the knee joint and then build strength and balance.Full Answer >
According to the Mayo Clinic, the causes of epididymitis are sexually transmitted infections such as gonorrhea and chlamydia, bacterial infections, sustaining a groin injury, taking a heart medication called Amiodarone, and tuberculosis infection. This swelling of the epididymis is usually caused by bacterial infection coming from the urethra, prostate or bladder.Full Answer >
The life expectancy of a man diagnosed early with AIDS is 75 years, according to The AIDS Beacon. Life expectancy estimates are not based on how many years ago he was diagnosed, but rather on his viral load at the time of diagnosis and his use of antiretroviral therapy.Full Answer >