Sleep apnea can manifest with a variety of symptoms, which can vary in severity depending on the individual and the type of sleep apnea (obstructive sleep apnea, central sleep apnea, or complex sleep apnea syndrome). Here are the common symptoms associated with sleep apnea:

1. **Loud and Persistent Snoring**: This is often the most noticeable symptom, especially if it is loud, disruptive, and occurs regularly throughout the night.

2. **Pauses in Breathing**: Witnessed pauses in breathing during sleep, often reported by a bed partner. These pauses can last for a few seconds to a minute or more.

3. **Gasping or Choking**: Sudden awakenings from sleep with a sensation of gasping for air or choking, often following a pause in breathing.

4. **Daytime Sleepiness**: Excessive daytime sleepiness, feeling tired despite a full night's sleep, and struggling to stay awake during the day.

5. **Morning Headaches**: Waking up with a headache or feeling unrested in the morning.

6. **Dry Mouth or Sore Throat**: Frequently waking up with a dry mouth or sore throat.

7. **Insomnia or Difficulty Staying Asleep**: Difficulty falling asleep or staying asleep (insomnia), which can be caused by the frequent awakenings associated with sleep apnea.

8. **Attention Problems and Irritability**: Difficulty concentrating, forgetfulness, mood changes, irritability, and decreased libido.

9. **Nocturia (Frequent Urination at Night)**: Needing to urinate more often during the night.

10. **Restless Sleep**: Tossing and turning in bed, restlessness during sleep.

11. **Decreased Libido**: Reduced interest in sexual activity or erectile dysfunction.

It's important to note that not everyone with sleep apnea will experience all of these symptoms. Some individuals may only have subtle symptoms, while others may have more pronounced and severe symptoms. Additionally, symptoms may vary between adults and children. If you suspect you or someone you know may have sleep apnea, it's important to seek medical evaluation and appropriate testing for diagnosis and treatment.