Headaches that happen with fibromyalgia are often similar to migraines as they are intense and very painful.
Due to the chronic pain in your body and joints it can lead to constant headaches. Patients that commonly suffer from headaches related to fibro report that they can often spot one developing a mile away as they have triggers that bring them on. If this is the case for you, such as eating cheese, or too much chocolate, then try to avoid those foods or actions that often force a headache to develop.
If you continue to get the headaches still avoiding the triggers, then speak with your physician about the possible use of migraine prescription medications. Botox injections have recently been very successful for many headache stricken patients as well.