Despite the fact that many people sleep with this condition sleep all of the time, they may still find that they are sleepy during the day. This excessive daytime sleepiness can make it difficult for people to complete simple activities. Daytime sleepiness can cause problems at work or school because a person may have trouble concentrating on their tasks.There are a number of signs that a person may notice if they suffer from excessive daytime sleepiness. This includes slowed speech, hallucinations, poor spatial reasoning and lapses in attention. Moodiness is another symptom of excessive daytime sleepiness.Next