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umonitis really depends on a variety of factors. Hypersensitivity and aspiration pneumonitis can completely resolve on their own – provided that you’ve developed chronic pneumonitis, irreversible scarring may have already developed.

Even with treatment, radiation and drug-induced pneumonitis are likely to be associated with long-term lung damage. However, the probability of permanent lung damage varies, depending on radiation and medication dosages, the length of time you’re undergoing treatment, and whether you already have lung problems.

Prevention 预防措施
Pneumonitis is generally hard to prevent. But one way that you can reduce your risk of developing aspiration pneumonitis is by abstaining from eating or drinking before surgery – if recommended by your doctor. Fasting reduces the risk of inhaling solid particles, liquids or stomach acid during the procedure.
If you’ve had hypersensitivity or chemical pneumonitis – and have determined what allergen or irritant provoked an inflammatory response in your lungs – you can take steps to prevent it from occurring again.
Meningitis
Meningitis is a disease involving inflammation of the meninges, the protective layers covering the brain and spinal column. Meningitis may develop in response to a number of causes, usually secondary to infection caused by bacteria, viruses and other pathogens, but also physical injury, cancer or certain drugs. While some forms of meningitis are mild and resolve on their own, meningitis is a potentially life-threatening condition due to the proximity of the inflammation to the brain and spinal cord. The potential for serious neurological damage or even death necessitates prompt Medical attention and evaluation.

It is very important to know the causes of infection, since treatment and severity of the disease differ for viral, bacterial and fungal meningitis. Viral meningitis is less severe, as compared to bacterial meningitis, and can be resolved “…without a specific treatment.” Bacterial meningitis may be severe and lead to brain damage, hearing loss or learning disability. To prevent the spreading of bacterial meningitis, it is very important to know the strains of bacteria causing meningitis.

Types of Meningitis 脑膜炎的类型
Most cases of meningitis are viral meningitis and bacterial meningitis.
Viral meningitis is usually relatively mild. It clears up in a week or two without specific treatment. Viral meningitis is also called aseptic meningitis. It is caused by such viruses as enteroviruses, which are very common in summer and early fall. These viruses are most often spread through direct contact with respiratory secretions (e.g., saliva, sputum, or nasal mucus) of an infected person. This usually happens by shaking hands with an infected person or touching something they have handled, and then rubbing your own nose or mouth. The virus can also be found in the stool of persons who are infected. The virus is spread through this route mainly among small children who are not yet toilet trained. It can also be spread this way to adults changing the diapers of an infected infant. The incubation period for enteroviruses is usually between 3 and 7 days from the time you are infected until you develop