Train, bus or fly from Beijing to Shanghai Maglev Train? China Railways G-Class operates a train from Beijing to Shanghai Maglev Train every 2 hours. Tickets cost $130 - $160 and the journey takes 4 h 48 min. Shanghai Metro also services this route every 10 minutes.
Pollen allergies aren't usually characterized by a sore throat, and headaches are among the less common symptoms of a pollen allergy. The more typical symptoms of a pollen allergy -- also called allergic rhinitis or hay fever -- are a runny nose, sneezing, itchy or water eyes, nasal congestion and an itchy throat.
Many doctors believe that a long duration of significantly increased levels of estrogen, followed by a sudden drop in hormones, such as the time just before menopause, will cause more severe headaches than even menstrual headaches. While the reason hormonal fluctuations cause headaches during menopause is still inconclusive, most researchers agree it has to do with the effects that hormones, such as estrogen and progesterone, have on the brain and its blood vessels.