'Sick' in the Bible

And when Saul sent messengers to take David, she said, He is sick.

And David said unto him, To whom belongest thou? and whence art thou? And he said, I am a young man of Egypt, servant to an Amalekite; and my master left me, because three days agone I fell sick.

The Egyptian replied, "I'm a young Egyptian man, the slave of an Amalekite man. My master abandoned me, because I got sick three days ago. We raided the Negev of the Cherethites, the territory that belongs to Judah, and the Negev of Caleb, and we set Ziklag on fire."