GALEN ON THE THERAPEUTICS FOR GLAUCON

...distinguishes them, for their face is slightly swollen, and the movement of the eyes is also obvious. For they raise their eyelids with difficulty. There is also moisture in the eyelids, whereas they become dry in those who are suffering from grief or deep thought. The hollowness of the eyes is a symptom common to all these states: grief, [348] sleeplessness, and worry. However, this is not the case with anger original: "thymos" (θυμός), for in anger neither the hollowness of the eyes nor the loss of color is obvious. In anger, the heat is also greater and rises quickly from the depths of the body, and the size of the pulse does not diminish, as it does in cases of sleeplessness, grief, and worry.

Therefore, you will distinguish these from anger quite clearly; but you will distinguish the others from each other as has been stated before. In those who have a fever due to physical exhaustion original: "kopos" (κόπος), the skin is drier than in any other type of ephemeral fever. ephemeral fever: "ephemeros pyretos" (ἐφήμερος πυρετός); a fever lasting only a single day, usually caused by external factors or temporary strain rather than deep-seated disease.

This dryness is common to all who have a fever from exhaustion, at least during the time leading up to the peak of the attack. peak of the attack: "akme" (ἀκμή); the turning point or most intense moment of a fever's cycle. After this point, in most cases, provided they did not overexert themselves to an extreme, some moisture or a warm vapor rises from the depths of the body. In some people, however, the dryness remains even after the peak of the fever. This happens mostly to those who have overexerted themselves, or those who were chilled or overheated during their labor.

The Latin translation repeats the Greek points for clarity.

...it distinguishes them, for they have a slightly swollen face, and then a manifest movement of the eyes. For they raise the eyelids with difficulty, and moisture is present in the eyelids, for they dry out in those affected by sorrow and care. Furthermore, hollowness is a symptom common to all, namely of sadness, wakefulness, and of thought and study, yet not of anger, in which neither the hollowness of the eyes nor discoloration is clearly seen. The heat is also more abundant, and it breaks out quickly from the deep body, nor does the magnitude of the pulse perish, as it does in sleeplessness, sadness, and thoughts. Therefore, these are most evidently distinguished from anger, while the others are distinguished among themselves as we have said before. Moreover, in those to whom fatigue has brought a fever, the skin is rendered drier than in any other daily fever. This is common to all feverish people from fatigue up until the intensity of the onset, from which time for most, those who indeed have not labored immoderately, a humor or warm vapor breaks out from the innermost body. For some, however, the dryness perseveres after the peak, and especially in those distressed by labor beyond measure or those chilled or scorched at the same time.