Dr. Jennifer Knaak Zimmer M.D.

Uncontrollable shivering is characterized by the rapid shifting between muscle relaxation and contraction. It is through these contractions that the body warms itself up when exposed to cold. Shivering is not always accompanied by fever. In some cases, shivering may occur before the onset of...

Cupping therapy is a traditional medicine followed in ancient cultures for relieving pain and other symptoms using cups placed on specific positions on the skin to create suction. The reduced pressure under the skin helps to draw and hold the skin under the cup. Experts in this alternative therapy...

What is ferrous sulfate?Ferrous sulfate is a form of iron that can be obtained through supplements. Our bodies mostly get iron through the different types of food we consume. Iron becomes a part of myoglobin and hemoglobin once it is inside the body. Myoglobin enables the storage of oxygen in...

Hiccups refer to the sudden spasms of the diaphragm, the muscle present at the base of the lungs that separates the chest and abdomen. These spasms result in the closure of the vocal cords, which produces the characteristic ‘hic’ sound of hiccups. Fortunately these bothersome contractions are...

What is an STD?Sexually transmitted disease, or commonly known as STD, is a type of disease that gets transmitted through sexual contact. AIDS caused by the HIV virus is a primary example of a sexually transmitted disease. Most STDs do not have any obvious symptoms at the beginning, aside from the...

A dark stool refers to a stool that is either black or dark red in color. You may pass dark bowel movements after consuming dark-colored foods or when an injury or bleeding is present in your gastrointestinal tract. If you pass dark or bloody stools, see your doctor immediately to rule out serious...