In people with Parkinsonâs disease, specific nerve cells or neurons in the brain steadily break down or die. Most of the symptoms are caused by the loss of neurons that produce dopamine (chemical messengers in the brain).
The signs and symptoms of pneumonia vary from mild to severe. Many factors affect how serious pneumonia is, including the type of germ causing the infection and your age and overall health. People who have pneumonia may have other symptoms, including nausea (feeling sick to the stomach), vomiting, and diarrhea. Symptoms may vary in certain populations. Newborns and infants may not show any signs of the infection.
The infection inflames your lungs' air sacs, which are called alveoli (al-VEE-uhl-eye). The air sacs may fill up with fluid or pus, causing symptoms such as a cough with phlegm (a slimy substance), fever, chills, and trouble breathing. Overview. Pneumonia and its symptoms can vary from mild to severe.Many factors affect how serious pneumonia is, such as the type of germ causing the infection and your age and overall health. Pneumonia tends to be more serious for: 1  Infants and young children.2  Older adults (people 65 years or older).he infection inflames your lungs' air sacs, which are called alveoli (al-VEE-uhl-eye). The air sacs may fill up with fluid or pus, causing symptoms such as a cough with phlegm (a slimy substance), fever, chills, and trouble breathing. Overview. Pneumonia and its symptoms can vary from mild to severe.