If you are suffering from fibromyalgia, you will feel moderate to severe pain at various parts of your body including the neck, back, arms and even the pelvic girdle. If you suspect that you may have fibromyalgia, you should consult a specialist doctor for a diagnosis of your condition.

Migraine pain attacks may be triggered by chocolate ,cheese, wine and contraceptive pills
Precise mechanism of migraine are unknown .Genetic factors probably play a role ,a rare form of familial migraine is associated with a mutation in the alpha-1 subunit of the P/Q - type voltage - gated calcium channel on chromosome 19.

Pain is stimulated mainly by the stretching of smooth muscle or organ capsules .Severe acute abdominal pain can be due to a large number of gastrointestinal conditions ,and normally presents as an emergency.An acute abdomen can occasionally be due to referred pain from the chest ,as in pneumonia ,or to metabolic causes ,such as diabetic ketoacidosis .