Periostitis blade of a horned dinosaur. Periostitis Periostitis, also known as periostalgia, is a medical condition caused by inflammation of the periosteum, a layer of connective tissue that surrounds bone. The condition is generally chronic, and is marked by tenderness and swelling of the bone and pain. Acute periostitis is due to infection, is characterized by diffuse formation of pus, severe pain, constitutional symptoms, and usually results in necrosis. It can be caused by excessive physical activity as well, as in the case of medial tibial stress syndrome (also referred to as tibial periostalgia, soleus periostalgia, or shin splints). Congenital infection
Holiday heart syndrome Holiday heart syndrome Holiday heart syndrome is an irregular heartbeat pattern presented in individuals who are otherwise healthy. Coined in 1978 the term is defined as "abnormal heart rhythms sometimes following excessive alcohol consumption; usually temporary". Holiday heart syndrome can be the result of stress, dehydration, and drinking alcohol. It is sometimes associated with "binge drinking" common during the holiday season. The condition can also occur when individuals consume only moderate amounts of alcohol. Irregular heartbeats can be serious. If palpitations continue for longer than a few hours patients should seek medical attention. Some abnormal heart rhythms (arrhythmias) associated with