Dr. Sandra Jones Wu MD

Cold sores are inflamed fluid-filled blisters, which appear in clusters on and around the mouth or lips. They can be seen when a person has a weakened immune system during fever, cold, or any other disease. Usually, cold sores are not harmful and should heal on their own within two to four weeks...

What is it?Recurrent herpes simplex labialis is a mouth infection that is caused by the herpes simplex virus. It is a contagious and common infection that can easily be passed on. Also known as oral herpes, recurrent herpes simplex labialis causes sores and blisters on the lips, tongue, mouth, and...

Ringworm is a fungal type of infection, which is caused by the fungal organisms known as dermatophytes. It can affect various parts of the body, especially the skin on the hands, feet, face, and neck. It can also affect the scalp or nails. Initially, it appears as a small dot. Gradually, as the...

Heat rash is a condition that easily goes away with time without the need for medical care. This usually happens when the skin cools down and the sweating reduces. Sometimes, it can take a few days for the affected part of the skin to heal completely. However, there are times when the rashes tend...

What is petechia?The definition of petechia falls under the category of hemorrhaging. A petechia, or more commonly used in Latin plural, petechiae, are microscopically small dots which appear beneath the skin surface in red, brown or purple color. We refer to them in plural because they are barely...

Acne is a condition that causes the skin surface to develop several bumps. Often, these bumps occur on the face, shoulders, back, and neck. It’s believed that acne is triggered by changes in the body’s hormonal structure, and that’s why it is highly prevalent in children and teens going...