Tony Ching-hsiang Chang M.D.

Depression is a state of mind wherein people feel sad, anxious, and upset all the time. It is a mental condition that affects the way a person thinks, feels, and behaves. Depression happens when people's thoughts turn completely negative and they later become distant avoiding any form of social...

Head lice are small insects found on the skin of the human scalp, eyebrows and eyelashes. Head lice are most commonly found among children but can also be seen on adults. They are generally harmless and can stay and live in the hair for a long time if left untreated.Head lice usually display no...

Laminectomy is a surgical procedure done for the removal of the lamina, bone spurs, and ligaments that may be putting pressure on your spinal nerves and causing lower back pain. The procedure is said to be one of the most commonly performed back surgeries. Below is a detailed information on what...

Your doctor will first attempt to give you other alternative treatments before recommending surgery. If your back pain still persists after treatment, your doctor may suggest for surgery as one of the solutions. Laminectomy is the most probable surgical procedure that you will have to undergo.Facts...

What is Epiglottis?Epiglottis is a elastic flap of tissue that is shaped like a thin leaf and situated at the root of the tongue. It protects the opening between the vocal cords, known as the entrance of the glottis. Epiglottis is covered with mucous membrane, which is a yellow elastic cartilage...

Doctors or physicians are categorized according to different factors including medical specialties and subspecialties. Most doctors specialize in a specific area of medicine. This article provides a summary of the different types of doctors in the medical field. AllergistsAllergists are also...