Dr. John Yoonsik Oh MD

Blisters can occur for numerous reasons. Although they are not often serious, the appearance of blisters itself can be very off-putting. A blister is a fluid-filled bubble that develops under the skin. The watery liquid under the blister is often clear, which is called serum.When blisters break, the...

Lymphocytes are a type of white blood cell produced in the bone marrow. A few lymphocytes enter the bloodstream while some move into the lymphatic system. Having a low or high lymphocyte count can help identify a person's medical condition. Normal lymphocyte counts usually vary from one laboratory...

OverviewRed blood cells (RBCs), also called erythrocytes, are the cells that carry oxygen throughout the body. They are also one of the major components of blood. Having a high red blood cell (RBC) count means that the number of RBCs in the bloodstream is higher than normal. When you have signs and...

The cause or severity of insect bites or stings can be determined by the symptoms. Most bug bite symptoms cause itchy or painful red bumps. Other insect bites can cause welts or blisters. The following are some clues of common insect bites:...

The mumps is a viral infection of the parotid glands, the saliva producing glands present within the cheek in front of the ears. The infection often results in the swelling of the parotid glands. This contagious infection was contained to a large extent after the introduction of the mumps...

Our body has certain parameters to maintain its normal functioning. Blood sugar levels and blood pressure readings are just a couple of screenings that can determine the body's functioning system. While having a high blood pressure is more commonly regarded by most people as dangerous, some people...