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Topic Index - Ear, Nose, and Throat Ear, Nose, & Throat Home Ear Disorders Anatomy and Physiology of the Ear Common Childhood External Ear Problems Otitis Externa (Swimmer's Ear) Foreign Bodies in the Ear, Nose, and Airway Otitis Media (Middle Ear Infection) Mastoiditis Hearing

Multiple Pregnancy Multiple pregnancy is a pregnancy involving more than one fetus. Click on the links below to learn more about this topic. Overview of Multiple Pregnancy Symptoms and Diagnosis of Multiple Pregnancy Complications of Multiple Pregnancy Care and Management of

Cystic Fibrosis in Children Click on the links below to learn more about this topic. Cystic Fibrosis Overview Genetics of Cystic Fibrosis Cystic Fibrosis and the Respiratory System Cystic Fibrosis and the Digestive System Cystic Fibrosis and the Reproductive System Symptoms of

Pregnancy Click on the links below to learn more about this topic. Pregnancy Overview Anatomy: Fetus in Utero The First Trimester (0 - 12 Weeks) The Second Trimester (12 - 24 Weeks) The Third Trimester (24 - 40 Weeks) The Pregnant Mother Hormones During Pregnancy Weight Gain

Hormones During Pregnancy Many hormone levels are affected in the body during pregnancy. Several hormones play major roles during pregnancy. These are: Human chorionic gonadotropin hormone (hCG). This hormone is made only during pregnancy. It is made almost entirely in the

Calculating a Due Date A typical pregnancy lasts, on average, 280 days, or 40 weeks—starting with the first day of the last normal menstrual period as day 1. An estimated due date can be calculated by following steps 1 through 3: First, determine the first day of your last

Cosmetic Safety for Contact Lens Wearers What eye hazards may be linked to cosmetic use? Misusing cosmetics when you wear contacts can lead to problems, including: Deposits on the lens. Eye irritation. Allergies. Injury. Infection. Dryness. What can you do to wear contact lenses

Alcohol and Pregnancy The risks involved with alcohol use during pregnancy Drinking alcohol while pregnant is a leading cause of birth defects for a baby. Everything a pregnant person drinks also goes to the baby. Alcohol is broken down more slowly in the baby's developing body

Allergy There are many things to consider when a child is affected by allergies. Listed in the directory below are some of these considerations, for which we have provided a brief overview. All About Allergy Types of Allergens Symptomatic Conditions of Allergy Diagnostic

Skin Tests What are skin tests? Skin tests may be done to diagnose rashes, moles, skin allergies, bacterial or fungal skin infections, and other conditions and diseases. Skin tests are also done to tell the difference between cancer (malignant) cells and noncancer (benign)