Agitated behavior was observed in 19 of 46 patients (41%). All patients were in a state of PTA throughout their periods of agitation. In 13 of the 19 patients (68%), agitation lasted for less than 10 days (Figure 1); three patients were agitated for about 50 days. Thirteen of the 19 agitated patients (68%) had one period of agitation, although the remaining six had recurrent periods.The first period was the longest for three of these six patients and the interval between the periods varied from 2 to 35 days. The median duration of all agitated periods was 6 days (IQR 4–15). The median peak value of agitation was 29 points (IQR 28–40) with an average of 24 points (Figure 2).As seen from Figure 2, nine of 19 patients had peaks corresponding to mild agitation, while four and six patients had peaks corresponding to moderate and severe agitation respectively. By average, the ABS score was below 29 (mild agitation) in 15 of 19 patients.