A Loan Forbearance- This is temporary. If you can't make scheduled payments, your lein holder may give you a forbearance. Maybe you can stop for a few payments or make smaller payments. Usually this will get tacked onto the end of your loan. It's not a long term solution.
You may need a short sale. This is where the lender accepts the sale proceeds as "paid in full" and you can walk away but the deal is closed and the harm to your credit is much less than a foreclosure.
Forbearances are rare but this Massachusetts short sales agent can help you get this much more common deal done on your house.
Don't count on a forbearance. Don't wait for one hoping it will fall out of the sky.