That problem is no problem.

He is working out his muscles at the gym every day.

This muscle pain is really painful.

My grandmother has been suffering from neuralgia for many years.

Her sorrow over his death was deep and sincere.

He was deeply saddened by the death of his friend.

She missed school because of menstrual pain.

My eye pain is so severe that it's hard for me to look at the computer screen.

Recently, I can't concentrate on my work because of severe shoulder pain.

My father has been suffering from sciatica for a long time.