is a group of disorders causing blood vessel inflammation without clear classification.

is a rare hair condition causing dry, frizzy, hard-to-comb hair.

is inflammatory bowel disease that shares features of Crohn's and ulcerative colitis.

is a rare, aggressive esophageal cancer with poorly formed, abnormal cells.

is a rare, aggressive cancer arising in the liver or bile ducts.

is a rare, aggressive stomach cancer with poorly formed, abnormal cells.

is a rare, aggressive cancer arising from the lining of the uterus.

is a rare pancreatic cancer with unusual giant cells and variable behavior.

is an autoimmune condition with connective tissue symptoms not fitting one disease.

is a rare, aggressive liver cancer that usually affects children.

is a rare soft tissue cancer that can grow and spread.

is persistent fever and inflammation without a clear cause, sometimes needing extensive testing.

is a rare disorder causing repeated fevers without a clear cause.

is a childhood disorder causing repeated fevers without a clear cause.

is a rare disorder causing enlarged lymph nodes in one area.

is a rare uterine shape with two upper chambers and one cervix.

is a rare birth difference where one female reproductive duct doesn't develop.

is a rare birth condition with enlarged kidney chambers on one side.

is a brain development difference affecting one area on one side.

is a brain development disorder causing seizures, weakness, and learning problems.

affects one inner ear, causing dizziness, vertigo, and balance problems.

is an inner ear disorder causing sudden balance problems and dizziness.

is a birth defect where one kidney develops many nonworking cysts.

is an extremely rare condition where one eye partially or fully duplicates.