Why do your head spin when you drunk?

When you drink alcohol, it affects the central nervous system and alters the balance and coordination functions in the brain. Specifically, alcohol influences the inner ear's vestibular system, which helps control balance, leading to sensations of dizziness or spinning. Additionally, dehydration and changes in blood pressure caused by alcohol can exacerbate these feelings, making your head spin. This combination of factors can disrupt your sense of orientation and stability.