Can bunions cause problems with entire foot?

Yes: Yes its possible that bunions can cause problems throughout the entire foot and lower extremity. It can cause abnormal pressure that can cause pain anywhere for example the arch to the lesser toes, to knee and even hip pain.

Sometimes: Bunions can cause crowding in shoes which can irritate other foot structures. Also, the mechanics of the foot which contribute to bunion formation will often be associated with other foot issues such as heel pain, pronation and arch collapse.