Vomiting is startling for both a toddler and a caregiver at times. Despite the boldness of the symptom, it isn't usually an indication of a serious health condition. Toddlers can contract a number of highly contagious organisms that cause vomiting.

Boundaries, including both physical and social, are an important part of raising children who are respectful and who have self-control, say Henry Cloud and John Sims Townsend, authors of "Boundaries with Kids: When to Say Yes, When to Say No, to Help Your Children Gain Control of Their Lives."

The ankle is a hinge joint that connects the tibia and fibula bones, and provides stability for weight bearing and foot mobility. Foot and ankle pain is quite common during childhood and adolescence, and most of the time is no cause for concern.

Umbilical hernia, protrusion of the intestine into a weakened opening in the abdominal muscle, occurs more often in infants than adults. Around 2 percent of adults develop an umbilical hernia, M. Velasco of Puerto Rico University Hospital Department of Surgery reported in 1999 in “Hernia.

According to a recent report on NBC News, a study by the Pew Research Center found that the number of single fathers in the U.S. is on the rise, with 2.6 million households led by a single father in 2011 -- a ninefold increase from 1960, when single fathers numbered about 300,000.

The way you raise your children can affect how successful they will be later in life. According to psychologist Nancy Darling, in the article "Parenting Style and Its Correlates," child psychology researchers identify four different types of child rearing practices that affect children's life outcomes.

While divorce can have devastating effects on a child at any age, perhaps the most difficult time in a child's life for him to experience such a separation is between the ages of 2 and 4 when his parents are the center of his world.

While researchers often disagree about the relationship between watching violent television programs and aggressive behavior in children, there are enough indicators of a correlation for you to consider limiting your children's TV viewing of violent programming, according to the Media Awareness Network.

Growing up in a single-parent family can have both positive and negative psychological effects on both you and your child.

You probably don't consciously evaluate your child's color each day, but your parental radar might alert you to the fact that your child looks paler than usual.

The Chinese culture is known for its ethic of hard work, discipline and excellence, as well as its emphasis on family and ancestral traditions.

The legal process for changing a child’s name to his biological father’s last name is not as simple as amending a birth certificate, Social Security card or other official document, according to Gayle R. Rosenblum, a New York family law attorney.