Dr. Asad U. Zaman M.D.

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 leptin?Leptin has been regarded as the "fat hormone", "obesity hormone", and in some cases, called the "starvation hormone". Scientists discovered leptin in the year 1994, and with its discovery, there was a lot of excitement since it was regarded as a potential hit product for weight loss...

A sore throat is simply defined as pain, irritation or itchiness of the throat. A person having a sore throat may have difficulty swallowing foods and liquids. In addition, the pain may be exacerbated when you try to swallow. A sore throat can affect both children and adults. Symptoms of sore...

Do I Have Migraines?Migraines are one of the most common types of headaches that affect people. The irritating pain is often accompanied by characteristic warning signs like blind spots, nausea, vomiting, and other symptoms. Migraines are caused by the enlargement of blood vessels along with the...

Hepatitis A is a liver disease caused by a virus of the same name. Hepatitis A is one of the different types of virus that affects the liver and results in inflammation. The disease may be mild to severe, affecting the functioning of the liver. In mild cases, no special treatment is required and the...

What is vitamin D?Vitamin D is a unique fat-soluble vitamin that plays a significant role in many aspects of health. Also referred to as the sunshine vitamin, it stands out from other types of vitamins since the body can produce vitamin D through sunlight exposure. With 20-25 minutes of daily sun...