I am going to assume you have Not had this headache for 2 years.... saying that. When was the last time you had your lithium levels checked? It could be blood pressure,get that checked also....See your Dr. ASAP and get back to us......good luck~~
im on only lithium 1200 a day for 2 years now.Does it ever go away.I hurt all the time.
Are you on any medications? If so, it could be side effects from the meds. II would consult your doctor if I were you.