State income tax is imposed at a fixed or graduated rate on taxable income of individuals, corporations, and certain estates and trusts. The rates vary by state. Taxable income conforms closely to federal taxable income in most states, with limited modifications.
Like other brain illnesses, anxiety disorders may be caused by problems in the functioning of brain circuits that regulate fear and other emotions. Studies have shown that severe or long-lasting stress can change the way nerve cells within these circuits transmit information from one region of the brain to another.
Only a doctor can truly diagnose the cause of your headache. Anxiety may lead to headache, but some headaches can actually lead to anxiety. Still, a good place to start is with my 7 minute anxiety test. There you'll get an idea of whether you've been dealing with anxiety symptoms.