Klinefelter syndrome is a genetic condition in which a boy is born with an extra X chromosome. Instead of the typical XY chromosomes in men, they have XXY, so this condition is also called XXY ...

Metabolic syndrome, also known as insulin resistance syndrome or syndrome X, happens when you have a group of health conditions that put you at a greater risk of developing heart disease ...

The random episode triggered a cascade of medical appointments that led her to one possible answer: stiff-person syndrome, a rare neurological disorder that causes muscle stiffness and painful spasms.

Sick building syndrome (SBS) happens when people feel unwell in a specific building, usually due to factors like poor air quality or inadequate ventilation. Common symptoms include headaches, fatigue, ...