Dr. William Kevin Sherwin M.D., PH.D.

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Biopsies may vary differently depending on the type and location of the tissues and how hard are they to obtain. The medical term used to describe such method is “invasiveness.” A less invasive procedure will, for example, take place in a doctor’s office the same day an abnormal tissue is...

Sweat glands cause perspiration whenever there is an increase in temperature, fever, or when you are involved in physical activity. Perspiration is also seen when one is nervous, anxious, or under stress. When none of these factors are present, the signals for the production of sweating are normally...

Heat rash is a skin condition that is also called as "miliaria". It occurs as a result of excessive sweating that leads to the blocking of sweat glands. Once your sweat glands are blocked, sweat accumulates in the skin layers causing rashes. Most the symptoms of this condition are characterized by...

Irritation and itching are two common symptoms of eczema. Whether diets are helpful to alleviate these symptoms is still not yet clear. Many studies that tried to associate diet and eczema have had contradictory results. Some studies show that eczema is related to food allergies, but many people...

Shingles, also known as herpes zoster, is a disease that occurs due to the reappearance of the varicella-zoster virus, which is the causative agent of chickenpox. Shingles usually starts with a skin rash. These skin rashes occur either in the form of a band or a strip covering a small area on your...