Dr. Phillip A. Sellers M.D.

What is dysuria?Dysuria is the medical term for painful urination or a burning sensation, discomfort, or difficulty when passing urine. In most cases, dysuria is a symptom of another medical condition. Males and females of any age can experience dysuria. However, this symptom is more common in...

What is prolactin?Prolactin or luteotropic hormone (LTH) is a peptide hormone, which promotes milk secretion in female mammals. This hormone also plays a significant role in pancreatic development, immune system regulation, and metabolism. When women become pregnant, their prolactin levels increase...

Croup in AdultsAlthough croup is commonly observed in children who are 6 months to 3 years old, it is also possible for adults to get the infection in rare cases. Croup is a viral respiratory infection caused by human parainfluenza viruses (HPIVs). However, other causes of croup may include...

What is biotin?Biotin is a water-soluble vitamin also known as vitamin B7. This vitamin is critical for an organism's growth and development. It also serves as a coenzyme of carboxylase enzymes and is involved in the metabolism of carbohydrates, fatty acids, and amino acids. Biotin is required to...

As pigmentation cells stop producing the pigment, gray hair is the result. It may also be bleached by the accumulation of hydrogen peroxide, a chemical naturally produced in the body. In most cases, graying occurs by the time an individual is 30-years-old. Most people have gray hair by the time they...

Coenzyme Q10 or Co Q10 is a nutrient that is present in many foods and also occurs naturally in the body. This nutrient has antioxidant properties and plays an important role in protecting the cells from oxidative damage. Most people have adequate amounts of this nutrient in the body. But the levels...