If u have a headache for over 5 days, is it something to be concerened with? its almost migraine like.

Dr. should evaluate: Headaches are universal, meaning everyone has a headache once in a while. A person with a severe headache, a weird headache, a recurrent headache, or a prolonged headache should see his primary care doctor. The doctor can check for causes such as sinus infections, artery inflammation, eye glaucoma, viral meningitis, etc... A specialist (neurologist, ophthalmologist, ...) is needed in some cases.

Depends: It depends on clinical features. Tension headache is not life threatening. Other headache lasting for five days need to be investigated.