Dear Barbara I also have severe headaches, they are migraine. I do not have PD. There are two new medications on the market for migraines, if it is a migraine. One is called Imitrex and the other is Zomig. I have taken Imitrex with great results. The headache was gone in about 20 min. I do not know if you are able to take these medications with PD, but you must also be careful if you have any signes of Heart Trouble . Ask your doctor if these are for you. Good Luck Rose