For many people, the only indication they may notice is feeling sluggish or fatigued during the day, which is easy to attribute to innumerable causes. You might find yourself dozing off at your desk, finding it hard to focus your attention on work, or getting sleepy early on in the evening.
Other potential symptoms listed by the Mayo Clinic include waking up gasping for air, waking up with a dry or sore throat, morning headaches, frequently waking, and difficulty concentrating. If you notice that your partner stops breathing, wakes up abruptly or snores heavily, consider bringing it their attention, as they may not be aware.