Mucus in the lungs or chest congestion in infants can be caused by multiple factors. Your infant is just starting to breath and can be more prone to respiratory infections. Respiratory infections cause mucus to form in the lungs and respiratory tract; mucus is a normal symptom of the common cold.

Since infants can't talk, it's difficult to determine exactly what is hurting them. However, your infant's body language may give you a clue. Headaches can be minor or the symptom of a more serious illness or injury. If you cannot manage the pain on your own, you should seek the medical advice of your physician.

Despite the lack of development in their bodies, babies are born with heads that are at an advanced stage of development. As the brain reaches half of its adult size by 9 months and nearly three-quarters by two years of age, a baby's head must be large and grow rapidly to accommodate the rest of the body's growth.

Bronchial pneumonia, also known as bronchopneumonia, is an infection of the bronchial tubes of the lungs and the most common form of pneumonia in infants.

Head twitching in babies doesn't always mean that your baby has a serious problem. In some cases, twitching occurs simply because a baby has an immature nervous system. She may soon grow out of these movements. However, if twitches are vigorous, very frequent or persist for a long period of time, consult your doctor.

Infants grow rapidly from the day they are born, but if you compare your child to other babies, you probably will notice a significant difference in size. Children come in all shapes and sizes and grow at different rates. To determine that your baby's growth is within the "normal"

Vomiting or spitting up in infants is usually caused by reflux because of the immature structures of the digestive system. This generally resolves over time as the infant's ability to process and digest food develops.

The best method to take an infant’s pulse is to listen to the apex of the heart with a stethoscope. In case of an emergency and when you don’t have a stethoscope, check a pulse on the large brachial artery of the infant’s arm. If an infant does not have a pulse, always call 911 while performing chest compressions.

Babies cannot verbally express how they feel, but a child, even an infant, can provide signs of a problem. An eye condition may exhibit symptoms such as redness, swelling or watery eyes.

Eggs are one of the most common sources of allergic reactions to food in children. Infants who are allergic to eggs usually experience symptoms soon after consuming eggs or foods that contain eggs. Common symptoms include hives around the mouth or on the body, swelling of the lips and face, and skin rash.

You may be alarmed some mornings to find your baby sleeping in sweaty clothes and on sweaty sheets or worry when your infant cries so hard that he works up a sweat. Infants, even newborns, have fully developed sweat glands in their heads and necks and will often sweat to regulate body temperature.

Newborn babies are full of awkward and unusual characteristics that may surprise you. Not only do newborns often have wrinkled and purple fingers and toes, but they may also do peculiar things with their hands, such as keeping them clenched tightly.