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  1. Motion sickness is a common condition characterized by a feeling of unwellness brought on by certain kinds of movement. The usual symptoms include dizziness, pale skin (pallor), and sweating, followed by ...
  2. Tetrahydrobiopterin deficiency is a rare disorder characterized by a shortage (deficiency) of a molecule called tetrahydrobiopterin or BH4. This condition alters the levels of several substances in the body, including phenylalanine. ...
  3. CDKL5 deficiency disorder is characterized by seizures that begin in infancy, followed by significant delays in many aspects of development.Seizures in CDKL5 deficiency disorder usually begin ...
  4. ... polymorphic ventricular tachycardia (CPVT) is a condition characterized by an abnormal heart rhythm (arrhythmia). As the heart ... disorder in their family.When CPVT is caused by mutations in the CASQ2 gene, the condition almost ...
  5. 22q11.2 deletion syndrome (which is also known by several other names, listed below) is a disorder caused by the deletion of a small piece of chromosome ... are often present from birth, recurrent infections caused by problems with the immune system, and distinctive facial ...
  6. ... is a rare, inherited disorder that is characterized by neurological problems caused by the death of nerve cells (neurons) in the ... called a cherry-red spot, which is identified by eye examination, is characteristic of this disorder. Children ...
  7. ... also known as herpes zoster) results from infection by the varicella zoster virus. This common virus causes chickenpox (also known as varicella), which is characterized by itchy spots on the skin that cover the ...
  8. Lyme disease is an infectious disease caused by Borrelia burgdorferi bacteria. The bacteria are transferred to humans by tick bite, specifically by blacklegged ticks (commonly known as deer ticks). The condition ...
  9. Type 1 diabetes is a disorder characterized by abnormally high levels of blood glucose, also called blood sugar. In this form of diabetes, specialized cells in the pancreas called beta cells ...
  10. Pseudohypoaldosteronism type 2 (PHA2) is caused by problems that affect regulation of the amount of sodium and potassium in the body. Sodium and potassium are important in the control ...
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