Addiction to smoking is like a mixture of itch and thirst, to a certain extent. You can get other psychological symptoms, like irritability and anxiety, or phys

Addiction to smoking is like a mixture of itch and thirst, to a certain extent. You can get other psychological symptoms, like irritability and anxiety, or physical ones, like headache, but mainly it's this continuous need of absorbing the substance, that never goes away. A bit like when you're itching and you can't scratch, or you're thirsty and you can't drink.