1. Migrianes
... include changes in certain hormones like prostaglandin (a pressure-like substance that may affect blood pressure) or endorphin (reduces the sensation of pain and affects emotions). Bruegel identifies four phases of a migraine attack. The first stage is called a prodrome. This may cause "a change in mood, energy level, concentration, or mental processing." Some people also crave certain foods while others experience anorexia. In ... some cases there is an increase in yawning, thirst, urination and diarrhea. The second stage is the aura, or warning sign that a migraine is going to occur. ...
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