Dr. Alissa Rachel Kahn M.D.

In normal cases, shafts of hair pierce the skin pores called follicles, and emerge externally to form a protective covering for skin. Sometimes, the same hairs curve backward and re-enter the skin creating small bulbous fluid-filled sacs, that become prone to infection. Such a condition is called an...

What Are Hives?Hives, also known as urticaria, nettle rash, or welts, refer to a skin condition characterized by raised itchy rashes. These rashes may develop suddenly, and can be localized or spread over a large surface of the skin. They vary in size and shape and are more commonly found in women...

Leukemia in its early stages may present no signs or symptoms, as these only appear when the leukemia cells have taken over a large number of normal blood cells. A person with leukemia is very lucky indeed if early-stage detection occurs incidentally, through a routine blood test or one done for...

IntroductionA decrease in the number of white blood cells (WBCs) is referred to as leukopenia. There are several causes for leukopenia. It may be due to certain drugs, cancer, radiation and chemotherapy for cancer, stem cell transplant, surgery, steroids, or autoimmune disorders. The immune system...

PurpuraPurpura refers to purple-colored spots that are usually seen on the skin, including mucous membranes and other organs. It is also called skin hemorrhages or blood spots.Purpura is usually recognized when there is pooling of blood under the skin due to ruptured small blood vessels. The size of...

Lymphoma is a blood cancer that affects both children and adults.Lymphoma begins its growth in the lymphatic white blood cells of the lymph system. This system is a major warrior in fighting off infections and diseases. It is part of the body’s immunity team.The lymph system loops throughout the...