1 Examples of viral infections include, mumps or hepatitis B. 2  Some autoimmune conditions-such as lupus, or Sjogren's syndrome. 3  Injury to the pancreas. 4  Idiopathic-about 15% of all cases of acute pancreatitis are termed idiopathic pancreatitis.
For instance, in America, these kinds of drums are referred to as the doumbek. They are widely used in E. Europe, N. Africa and a larger part of Asia. Good examples of these kinds of drums include the Bendir, Riq, Tamburine, Irish bodhran etc. These drums are mostly made of wood which forms almost a perfect circle.
The kinds of drums that exist vary as infinitely as the people who use them for communication, ritual, or entertainment. A common, easy way to classify drums types is by their shape. Most drums fall into the following categories: cylindrical, barrel, conga, waisted, goblet, or bowl. A frame drum, with its squat hoop, and a long drum, which is thin and tall, are both the cylindrical variety.