Their mind becomes dull, stupid, sluggish and they start having difficulties in comprehending a discussion, difficulty in thinking. They cannot make simple calculations as they used to, it is very difficult for them to concentrate and do calculations. They will answer incorrectly. They develop an aversion to mental work, even to thinking. They feel prostrated, mentally exhausted, and eventually mentally confused. This may be characterized by a feeling as if they were drunk, which causes everything to seem unreal and dreamlike.
Ailanthus’ memory decreases rapidly; what happened yesterday is forgotten, they may not recognise persons they were supposed to know, and forget what they have just said, etc.. "All past events are forgotten. Past events are forgotten or remembered as belonging to someone else, or as matters read."
In a similar way the senses are blunted and lose their acuity. In such patients you will notice an anxiety depicted in the face, a kind of obvious distress. There is an aggravation which starts before going to bed and lasts until sleep takes over, which reappears on awakening after a little sleep, and continues for some time after rising in the morning. The aggravation of their symptoms is coupled with an acute anxiety. Symptoms are also aggravated if they lie on their left side, so in all these symptoms we see the resemblance to Lachesis. Epileptic convulsions very early in the morning with extremely distressed breathing.
Ailanthus cases have a desire to weep all the time for no reason as they are acutely troubled by all this mental confusion and deterioration.
Eventually they fall into depression, low spirits, or a state of indifference or apathy with constant sighing.
I should like to note here that you should not always givelgnatia for grief and sighing, since other remedies, like Ailanthus, also have sighing after grief. In order however to prescribe Ailanthus you need to have the mental picture as well, the stupefuction of the brain, the dark redness of the face, the fullness in the head etc.
It is important for the student of homeopathy to realise the particular effect that each remedy has upon the different systems or organs, and prescribe accordingly. In this remedy we have a specific effect upon the brain that the student of homeopathy must perceive clearly before he can prescribe it to the sick with some accuracy.