Cider, beer, ale, and porter contain from 4 to 6 per centum of real alcohol; light wines, red and white, and natural sherry, 10 to 12 per centum; strong sherry and port, 16 to 18 per centum; brandy, 39 to 47 per centum by weight, or 46 to 55 per centum by volume; and whiskey, 44 to 50 per centum by weight, or 50 to 58 per centum by volume. The effect of these liquors on the body is due primarily to alcohol, and secondarily to ethereal derivatives of alcohol. Some owe a part of their effect to non-volatile substances,—beer from which all alcohol has been boiled can still affect the body in a marked degree.
The chemist of the Massachusetts State Board of Health (Document No. 34) gives the percentage of alcohol in the common proprietary medicines, and these percentages will be found in the [article] on Social Medicine.
The weakest of these compounds are twice as strong in alcohol as beer, and they treacherously bring about the habit of drunkenness in disposed persons who may be very desirous to avoid such a calamity.
Some men and women are quickly destroyed by alcohol; others resist it more or less successfully for a lifetime, as far as mere existence is concerned. Alcoholism is one of the commonest causes of insanity, but it is often an effect of insanity. It may be an early symptom of paresis, or a part of the maniacal stage of circular insanity. In poisoning by alcohol the higher nerve centres are first affected and the [{109}] lowest last. The sense of human dignity and of morality, the exercise of the intellect, are more or less inhibited before the motive muscles are affected.
The usual effect of alcoholic poisoning is boisterous exaltation of mind, but there is a depressed type of drunkenness which weeps. Some patients at once are subjected by hallucinations and delusions, others are so depressed that they have a suicidal tendency, others may have a maniacal frenzy that is destructive or homicidal. In these neuropathic conditions muscular co-ordination is commonly well preserved—the patient is "drunk in the head and sober in the legs."
In alcoholism the mental changes are gradual and progressive. The intellect is blunted, the judgment becomes foolish, the moral sense is dulled. The drunkard is always a liar. Delusions not infrequently occur, and it is one of the common symptoms of alcoholic insanity to suspect a wife or husband of conjugal infidelity. If a man that is a drunkard accuses his wife of infidelity, the chances are fifty to one that she is innocent and that he is in the first stages of insanity. This symptom is characteristic also of cocaine intoxication.
Another mental disturbance of acute alcoholism is delirium tremens, which is inexactly called mania a potu by some writers. Delirium tremens is not a form of mania, but an acute hallucinatory confusion, in which the consciousness is much more impaired than it is in a mania. Mania a potu is a real mania, and it is transient commonly, although it may leave permanent mental weakness with delusions.
In chronic alcoholism a paranoid condition may occur, and this often is incurable. This psychosis may come on suddenly or gradually. In true paranoia the delusions are systematised, but in this alcoholic pseudoparanoia the enfeebled intellect can not build up coherently even a delusion. The alcoholic hallucinations are visual and auditory, and we find delusions of persecution, especially of a sexual nature. The patient hears all kinds of insulting remarks made by "voices." These voices often come from his own belly. His enemies send poisonous or foul odours into his room at night, and the groundless suspicions of his wife's infidelity take most outrageous forms of expression. He will swear [{110}] he has seen her misdeeds. Often the baseless suspicions of his wife begin before any other noticeable impairment of intellect, and are not recognised as delusions. The first step a priest should take in investigating accusations of conjugal infidelity is to find out whether the accuser is a tippler or not.
The delusions of persecution lead to attacks on the supposed enemies which often are homicidal. Occasionally alcoholic insanity takes on a paretic form, or it may be epileptic. Ten per centum of alcoholics are epileptic. When the children of alcoholics are epileptic, the convulsions begin in these children about four years earlier than in children that are epileptics from other causes. If epilepsy is latent, alcoholism will start it into action.
Alcoholism sometimes produces a condition of waking trance followed by amnesia (lack of memory). In such a state the drunkard may transfer property, carry out complicated professional actions, commit crime, take long journeys, travel for days, and so act that no one notices his disordered mental condition. Then suddenly he awakens and he has no recollection whatever of what has happened during this trance. He appears to be conscious, but to have no memory of his consciousness. There is another alcoholic amnesia, found especially in those that drink much during the morning hours, where there is instantaneous forgetfulness. If you ask one of these men to shut a door, for example, he will forget between his chair and the door what he started to do. This condition is difficult to cure even after the use of alcohol has been relinquished.