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Achondroplasia is a group of rare genetic (inherited) bone disorders. Achondroplasia is the most common type of what was once called dwarfism, in which the child's arms and legs are short in proportion to body length.

Diabetes occurs when not enough insulin is made, or when the body is unable to use the insulin that is made. The three main types of diabetes are type 1, type 2, and gestational diabetes.

Diabetes is a condition in which the body can't make enough insulin, or can't use insulin normally. Type 1 diabetes is an autoimmune disorder. The body's immune system damages the cells in the pancreas that make insulin. Insulin is a hormone. It helps sugar (glucose) in the blood get into cells of the body to be used as fuel. When glucose can’t enter the cells, it builds up in the blood. This is called high blood sugar (hyperglycemia).

Addison disease is when the adrenal glands don't make enough of two steroid hormones. The hormones are cortisol and aldosterone. Cortisol controls the body's metabolism, blocks inflammatory reactions, and affects the immune system. Aldosterone manages sodium and potassium levels. Addison disease is fairly rare and may first appear at any age.

Obstructive sleep apnea is a condition that causes a child to briefly stop breathing while sleeping. It happens because of a blockage in the upper airway. The pause in breathing may occur many times in a night, disrupting the child’s sleep.

Congenital laryngeal stridor is a noisy or high-pitched sound with breathing. It is from an abnormally formed voice box (larynx). It is present at birth (congenital).

Ear tubes are small tubes that are placed in your child’s eardrum by an ear, nose, and throat surgeon. The tubes help to drain the fluid out of the middle ear. Read on to learn more.

Stridor is a noisy or high-pitched sound with breathing. It is a sign that the upper airway is partially blocked. It may involve the nose, mouth, sinuses, voice box (larynx), or windpipe (trachea).

Human parainfluenza viruses (HPIVs) are a group of viruses that cause different types of respiratory infections. They are more common in children and babies. But they can occur in people of any age, especially those with a weak immune system.