What is a common symptom of sleep apnea that may be observed during sleep?

Loud snoring is a common symptom of sleep apnea and is often one of the first signs recognized by bed partners or family members. In obstructive sleep apnea, the airway becomes intermittently blocked during sleep, leading to episodes of gasping or choking that can cause snoring. The sound is typically louder and more irregular than normal snoring due to the struggle to breathe through a partially obstructed airway. This symptom, when observed in conjunction with other signs such as excessive daytime sleepiness or witnessed apneas, can be indicative of sleep apnea, prompting further evaluation and potential diagnosis.

The other symptoms listed, while potentially related to sleep disturbances, are not specifically hallmark indicators of sleep apnea. Frequent waking up in the morning does not directly signify sleep apnea, as waking may occur for a variety of reasons. Increased dreaming is not a recognized symptom of sleep apnea; rather, individuals with this condition often experience disrupted sleep patterns, which can affect the quality of dreams. Difficulty falling asleep can occur in various sleep disorders and is not specific to sleep apnea. Thus, loud snoring stands out as a core symptom closely associated with the condition.