Is obstructive sleep apnea painful?

No: Sleep apnea can cause headaches, dry mouth, mood and personality changes, excessive sleepiness. It is not a painful condition.

Silent killer: Sleep apnea is significantly under diagnosed and is life-threatening if not recognized and treated. It is not painful but leads to weight gain, fatigue, headaches, irritability, hypertension, and cardiac arrhythmia (among many other symptoms). It can be treated many different ways. The best is positive pressure devices coupled with weight loss. Surgery and dental devices are also an option.

No but: Although sleep apnea doesnt cause pain in itsself, one of the most common presenting sign is recurring morning headaches.

No: No. But many problems ensue. Read about it here: http://www.mayoclinic.org/diseases-conditions/obstructive-sleep-apnea/home/ovc-20205684