Symptoms of pneumonia not caused by bacteria may come on gradually and are often not as bad or as obvious as symptoms of bacterial pneumonia. Many people don't know that they have nonbacterial pneumonia, because they don't feel sick. But symptoms may include: Fever.
Being exposed to too many UV rays has been linked to these negative health effects: 1  sunburns. 2  premature skin aging. 3  skin cancer. 4  eye damage. 5  weakening of the immune system.
Why it happens: When UV rays reach your skin, they damage cells in the epidermis. In response, your immune system increases blood flow to the affected areas. The increased blood flow is what gives sunburn its characteristic redness and makes the skin feel warm to the touch.