Nathan Tan Navarro MD

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  What is yawning?Usually, yawning is associated with boredom, fatigue, and tiredness. Yawning is also very common in animals, such as dogs, monkeys, snakes, and carnivores. Yawning is also associated with numerous superstitious beliefs.In humans, yawning is considered as a purposeful non-verbal...

• What Is HSV-1?

  Herpes Simplex Virus 1 (HSV-1)HSV-1 or herpes simplex virus type 1 is a type of herpes simplex virus that causes cold sores. It is called "oral herpes" because it often causes sores around the mouth or on the lips. Cold sores are also called as fever blisters. However, the sores can also be found...

• 6 Reasons Why You Are Coughing Up Green Mucus

  IntroductionMucus is a moist film, which helps keep your nose from drying out and protect your lungs from foreign substances, such as bacteria, viruses, dust, and other harmful intruders. It keeps you healthy but you may only notice it whenever you are sick. Mucus becomes thicker when you are sick,...

• When Should I See a Doctor if I have Back Pain?

  Physical pain brought about by back pain can sometimes be unbearable making sitting, standing or walking a painful activity to undertake. Other aspects of your life might be affected too, such as sleep or your overall mood. Your daily life activities like study or work can also be affected resulting...

• Xanax: Side Effects, Withdrawal Symptoms, & the Safe Way to Get Off the Drug

  Xanax is a medication used to treat patients suffering from panic disorders, anxiety, and depression due to anxiety. Xanax is a part of the drug family or class benzodiazepines.Effects of this drug usually start within twenty-five minutes of taking it and provide relief for up to a few hours....

• What Could Dysuria Be Telling You?

  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...