A reactive dog reacts in a way that mirrors your emotions. If you get upset, he gets upset. If you calm down, he calms down. Because of this, a reactive dog can sometimes be a frustration to live with, until you know how to handle him.
Swelling in the knee can be acute or chronic. Common Causes of Knee Pain or Knee Inflammation. Many of us refer to swollen knee as having âwaterâ on the knee. Medically speaking this is actually true. One of the major causes of a swollen knee is the accumulation of fluid within the knee joint of its surrounding tissue.
Several other things can also cause knee pain, such as: 1  Bursitis: A bursa is a sac that holds a small amount of fluid thatâs under the skin above your joint. It helps prevent friction when the joint moves. 2  Dislocated kneecap: This means that your kneecap slides out of position, causing knee pain and swelling.