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.
When light illuminates matter it can heat it up, and this is the main effect of IR. Visible and UV light can also start chemical reactions if they reach appropriate absorbing molecules called chromophores, and these are very abundant in skin and eye cells.