This is from doing some research, but to know more in depth of symptoms you can research more, I couldn't fit all the information in the post.

Yes, localized neck pain or soreness can absolutely be a sign that a new hidradenitis suppurativa (HS) flare is forming under the skin. Many people experience a "prodromal phase"—a warning period 12 to 48 hours before a physical lump appears—characterized by localized pain, stinging, burning, or itching.

My daughter gets them on her neck and back by her spine, causing back and neck pain

Thank you!

It is a possibility

interesting