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Vision, hearing, and speech are an important part of your child's life. When an infant is born, their eyesight is immature. The infant later develops the ability to focus. Hearing appears early as a baby develops in its mother's uterus. Hearing is needed for correct speech and language development.

Detailed anatomical information on the respiratory system in pregnancy.

Primary hyperparathyroidism is when one or more of the parathyroid glands makes too much parathyroid hormone. This can lead to bone tissue loss. Here's what you need to know.

Heart valves can malfunction in one of two ways: They can fail to close completely, allowing blood to flow backward, or they can become damaged, limiting blood flow.

Learn all about insulin replacement therapy for type 1 and type 2 diabetes. Includes helpful information on different types of insulin, how it is given, insulin injection devices, and pancreas transplants.

Cholecystitis is a redness and swelling (inflammation) of the gallbladder. It happens when a digestive juice called bile gets trapped in the gallbladder.

Complex regional pain syndrome is an abnormal response by the body to an injury. Symptoms include constant pain and sometimes swelling, sweating, and skin color and temperature changes in the affected area. Treatments include pain medicines, physical therapy, and electrical nerve stimulation.

A subconjunctival hemorrhage is when a blood vessel breaks open in the white of the eye. It causes a bright red patch in the white of the eye.

Digital eye strain is a group of eye and vision problems related to extended computer use.