Dr. David S Chan M.D.

Shingles, or herpes zoster, refers to the painful skin rashes caused by the varicella zoster virus. In this condition, a band of rashes usually appears in a small area on the face or body. This infection is very common in people who have a weak immune system due to various reasons. Older adults are...

Hand sanitizer has alcohol, like ethyl alcohol, as the active ingredient to provide the antiseptic effect. In addition, it may also contain a variety of fragrances, glycerine, and water. Sanitizers containing alcohol are ideal for preventing most of the bacterial and viral infections. But these may...

Herpes is a viral infection caused by the herpes simplex virus, which is of two types – herpes simplex type 1 (HSV-1) and herpes simplex type 2 (HSV-2). HSV-1 causes blisters and sores in and around mouth, referred to as cold sores, oral herpes, or fever blisters. In HSV-2 infection, sores are...

Experts are of the opinion that if you are not so interested in having a whole fruit or vegetable, juices are a good option to include the nutrients in the diet. You can think of different varieties, like kale, carrots, parsley, and apples to have the benefits. This is true because juices contain...

As the urinary bladder fills, the sensation to release urine gradually builds up. Few people have a continuous urge to ease the bladder while experiencing pain. This situation, called bladder spasms, may lead to wetting one's pants. Bladder spasms are caused by the muscles of the bladder contracting...

Appendicitis is the inflammation of the appendix, a disease that is mostly known as the rupture of the appendix. The human appendix is considered to be a vestigial structure. Vestigial means lacking meaningful work, or the evolving of a part of the body to take on a new shape, or an organ that has...