Can I die from fibromyalgia if I ignore it?

No. ? can I die if I ignore fibromyalgia (FM). FM is soft tissue disorder (see Osteopath) & evolves from conjoined effects of several conditions (see my other Healthtap posts). None of these conditions is individually lethal nor is full-blown FM Syndrome lethal. Depression is often a major accompaniment of FM. This symptom might become severe enough to induce thoughts of self-harm, but this is rare. .
No. But you will not be able to function at your best. Why not get help?
Fibromyalgia. I am not aware of complications of this illness, other than chronic discomfort & disability with physical symptoms.