Dr. David C Shyr M.D.

What is valerian root?Valerian is a type of flowering plant and its roots are used as an herbal remedy when dried. Valerian root is used as an alternative medicine to aid in the treatment of insomnia. Other uses of valerian root include treatment for stress, anxiety, depression, epilepsy, tremors,...

Agoraphobia is an anxiety disorder in which you feel extremely fearful of places and situations that are uncomfortable and dangerous according to you. These are the places that make you feel trapped and assume that the escape might be difficult in the case of a panic attack, such as an elevator, a...

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...

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...