Endocrine System

A-Z Guide

Congenital Hypothyroidism
Congenital hypothyroidism occurs around the world, but is fairly uncommon. It is twice as common in girls as in boys.... »
Contact Transmission
Contact transmission requires some form of touch to spread an infection. Direct contact transmission involves immediate... »
Coxsackievirus
A surprising variety of different-appearing illnesses can be caused by the coxsackieviruses, a family of enteroviruses... »
Diphtheria
Diphtheria is a bacterial illness that has been known to plague children since the 4th century B.C. The bacteria can... »
Early Puberty
Precocious puberty is often defined as the onset of true puberty before 8 years of age in girls or 9 years of age in... »
Galactosemia
Lactose, or milk sugar, is made up of two simple sugars: glucose and galactose. Classic galactosemia is a condition... »
Hypospadius
Hypospadius is the name of the condition in which the opening of the penis (the meatus) is located some place other... »
Inconspicuous Penis
When a penis appears absent or too small, we call the condition inconspicuous penis. I've seen this in a great many... »
Labial Adhesions
Usually, the lips of skin surrounding the entrance to the vagina are separate, with a clear opening in between. In some... »

Q&A

Anterior Fontanel (Soft Spot)
The anterior fontanel, or soft spot on a baby's skull, is a cause of concern for many parents. Elsewhere, the baby's... »