Why do lemons and limes give you headaches?

Can kids go to school with croup? What is the phobia of pencils called? What is the average ring size of an American woman? Why were many pregressives against the consumption of alcohol? What is thre function of the valves which connect the heart chambers? What are some complications of pregnancy? Can you be pregnant if from 2dpo to 9dpo you had sore breasts but at 12 dpo don't have that symptom? Can high blood pressure and high cholesterol patient eat durian? You have had brown discharge for a couple of days now It's about 11 days after your period you also have small cramps? What means stiff heart? What does it mean to have your Eye lid pierced? What phobia is the fear of oceans? Are cavities more common in upper teeth? What stores feces before release in the digestive system? What STD can cause blindness and insanity? Can warfarin cross placenta? Why do you let the chest recoil? How often do most people urinate? What is the average resting heart rate of a tiger? Can you stop your period half way through with a tablet?