Drinking alcohol improves their mood. Biochemically, during the depressive phase low levels of brain nor adrenaline, serotonin and dopamine have been observed. Excessive drinking may results in sedation, sombulance and hangovers. Increased consumption of stimulants such as coffee or nicotine occurs during withdrawal. Some of the symptoms of withdrawal are palpitations, high blood pressure, tremors of the hand, epilepsy and panic attacks.
Alcohol causes damage to the prefrontal lobe thus resulting in judgement loss.
These individuals find it difficult to recognize their state of inebriation. Alcohol raises brain levels of noradrenaline, serotonin and dopamine, the opposite to the first group. These individuals find alcohol an excellent antidepressant and need to drink to stay normal. Thus reducing alcohol in this group results in decrease in brain neurotransmitter release. In a way they drink themselves sober.