Dr. Marcia L O brien M.D.

Recommended Articles

• What Does Dark Stool Mean?

  A dark stool refers to a stool that is either black or dark red in color. You may pass dark bowel movements after consuming dark-colored foods or when an injury or bleeding is present in your gastrointestinal tract. If you pass dark or bloody stools, see your doctor immediately to rule out serious...

• Metal Taste in Mouth

  Why does my mouth taste like metal?The perception of a metallic taste in the mouth is a symptom that can be found for several reasons. In some cases, this aftertaste depends on mild and transient conditions, sometimes it may be the warning of some more serious pathologies.Among the possible causes:...

• Why Do the Benefits Outweigh the Risks of Circumcision?

  Male circumcision has been a highly debated topic with arguments both for and against it. Various religious and traditional practices across the globe favor circumcision. However, there are also large sections of the population in other parts of the world where circumcision is not recommended by...

• Pneumonia: Are There Multiple Types?

  What is pneumonia?Pneumonia is an acute lung infection that causes inflammation of the air sacs in either one or both lungs. The air sacs get filled with fluid or pus, making it difficult for the affected person to properly breathe. Individuals who have contracted the infection usually cough and...

• What Is Ringworm?

  Ringworm, or tinea, refers to a fungal infection of the skin. The term ‘worm’ is derived from the old belief that the disease was caused by a worm. The term ‘ring’ refers to the characteristic ring-shaped patches produced by the fungus on the skin. Infection is often found in the outer layer...

• What Is a Lower Back Pain with Sciatica?

  Lower back pain is a common problem experienced by most people at some point during their lifetime. There are several causes for lower back pain with sciatica, and the intensity of pain can range from dull to quite severe. Men and women are equally affected by this condition. Most cases of back pain...