Dr. Jonathan Yun-hong Wu MD

What is a persistent cough?It can be annoying to have a cough that lasts for more than a couple of weeks. A cough is considered chronic or persistent if it does not go away after four weeks in children and eight weeks in adults. However, most persistent coughs are due to colds, flu, infection, or...

Oliguria is a medical term used when referring to a decreased urine output. Oliguria is considered when a person’s urine output is less than 400 mL in a 24-hour period. When it comes to infants, oliguria occurs when the urine output is less than 0.5 mL/kg/hr for 24 hours. Anuria is the absence...

Head lice are an unpleasant affliction common in children and young teens. This is hugely owed to three factors that highly contribute to head lice infestations. First is the frequent sharing of personal items like hair brushes, hats, pillows, and blankets. Second is going head-to-head with infected...

Heartburn is usually triggered when stomach acid travels up toward the esophagus and cause a burning feeling in your throat or chest. It can be a very unpleasant feeling, but there are natural home remedies that can help relieve it aside from taking over-the-counter medications. However, it's time...

Hypothyroidism is a type of hormonal imbalance in which the thyroid hormones are in lower than normal. Essentially, it is the result of an underactive thyroid, and may be referred to as such. The two major hormones produced by the thyroid gland (T3 and T4) play an important role in your metabolism...

What Is Atelectasis?Atelectasis refers to the partial or complete collapse of a lung or its lobe. It develops when alveoli i.e. tiny sacs of air present in the lung deflates. It is a type of respiratory or breathing complication that takes place after a surgical process. The problem of lung collapse...