Dr. Keith L Callahan M.D.

Recommended Articles

• What Are Pinworms? Treatment and Home Remedies for Pinworms

  A pinworm infection is a parasitic infection of the intestines, mostly affecting children. Pinworms can cause great discomfort in children since the infection comes with itching and irritation in the perianal region. This parasitic infection can spread from one child to another. Even adolescents...

• Treatments for Conjunctivitis

  Conjunctivitis or "pinkeye" is an infection of the conjunctiva, the thin, clear membrane coating the white of the eye and lining the inside of the eyelid. The symptoms may vary slightly depending on the cause, but are distinct: redness of the white part of the eye, tearing, a thick yellow discharge...

• Symptoms or Signs of Arthritis

  Arthritis is one of the oldest diseases known to humans. Arthritis can affect people and children of all ages. The pain and stiffness of the joints are serious symptoms indicating that the person may have some serious type of arthritis that needs urgent treatment. If the person delays the visit to...

• Viral vs. Bacterial Infections: Know the Difference

  IntroductionBoth bacterial and viral infections are caused by microbes, such as bacteria and viruses. These microbes are spread through the following:...

• What Is the Purpose of the Hormone Prolactin?

  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...

• What Are the Signs and Symptoms of Sinusitis?

  Sinusitis occurs because of the infection of the sinuses or cavities of the nasal passage, causing an inflammation and swelling of the tissue lining them. The usual cause is a virus, and the infection persists even when the upper respiratory symptoms have disappeared. Bacteria or fungi can also...