Though appendicitis is common many important questions remain unanswered. When is the appendix normal and when is it the cause of abdominal pain? Why does appendicitis primarily affect older children and young adults? Why is appendicitis uncommon in those under five years of age and in those over sixty years of age? Why are boys affected more often than girls? Why does appendicitis appear to ru...

Background and aims: The most common cause of acute flaccid paralysis of all ages is Guillain-Barresyndrome (GBS). Further understanding of this disease is important because of its life-threateningnature in life. The aim of this study was to conduct a 10-year survey on epidemiological and clinicalfeatures of GBS in Tohid and Besat hospitals, Sanandaj, Iran, from 2005 to 2014.<...

Clinical and Epidemiologic Characteristics of Smallpox Smallpox is a viral disease unique to humans. To sustain itself, the virus must pass from person to person in a continuing chain of infection and is spread by inhalation of air droplets or aerosols. Twelve to 14 days after infection, the patient typically becomes febrile and has severe aching pains and prostration. Some 2 to 3 days later, a...