Introduction

Anotacoes

Introduction Cystic fibrosis is a chronic genetic disorder affecting children and adults since ancient times, primarily involving the respiratory, digestive, and reproductive systems. Key manifestations include chronic lung infections, pancreatic insufficiency, sinusitis, and infertility. The disease often shortens lifespan, with end-stage lung disease being the leading cause of death.[1][2][3][4] •Historical Perspective Historically misunderstood, cystic fibrosis was recognized in folklore through the "salty skin" symptom, symbolizing an incurable condition. In medieval Europe, affected children were believed to be cursed by witches and destined to die. The curse warned, "Woe to the child who tastes salty from a kiss on the brow, for he is cursed and soon will die." Salty skin indicated an impending illness without cause or cure. Until modern times, cystic fibrosis remained poorly understood. •Modern Understanding Modern knowledge began in 1949 when scientists identified the autosomal recessive inheritance pattern and linked the disease to a defect in the CFTR protein, a chloride channel vital for salt and water regulation. Quinton hypothesized that sweat ducts in these pa...