Dr. Janet K Christiansen M.D.

Athlete's foot is an infection caused by a fungus, which affects the skin of the foot. This fungal infection is one of the most common skin problems. The infection starts from the toes and may spread to other areas of the body. The foot may start becoming itchy and scaly. The skin may also develop...

The ABO (A, B, AB, or O) blood group system is used to classify different types of antibodies in the plasma and antigens in the red blood cells (RBCs). The ABO blood group and RhD antigen determine the type of blood that is a perfect match for blood transfusions. The four ABO blood groups are: ...

IntroductionMedications that help treat hypertension are called antihypertensive drugs, which are divided into different categories. These medications work differently with different side effects. Because there are many antihypertensive drugs available, finding the best medication and treatment plan...

Basically anyone can experience lower back pain but studies have shown that adults of age 30 to 60 years tend to have a higher chance of experiencing back pain. Nevertheless, no one is safe from lower back pain.Lower back pain can be caused by a variety of problems with any parts of the complex,...

Why are my tonsils swollen?The human body is a marvelous creation--a true work of art. It has the infrastructure to keep itself safe from harmful bacteria and viruses, and it has the ability to heal itself. One of these infrastructures is the tonsils. These are lymph nodes located at the back of the...

Acid reflux is a common condition wherein a person feels an internal burning pain in the lower chest area due to the stomach acid backflow into the esophagus (food pipe). Once in a while, acid reflux may be experienced. It is a common condition, which you should not worry about. However, if you...