Huntington's disease is a genetic disorder that affects the brain, leading to progressive movement, cognitive, and emotional problems. It is caused by a mutation in the HTT gene, which produces a protein called huntingtin. Symptoms usually appear in middle adulthood and can include uncontrolled movements, difficulty with coordination, and changes in mood or behavior. As the disease progresses, individuals may face challenges in daily activities and require increasing support. There is currently no cure for Huntington's disease, but treatments can help manage symptoms. Genetic testing can determine if someone carries the Huntington's gene mutation, allowing for early intervention and planning.