This morning while taking a shower, I was greeted with a grumbling in the pipes and then a loss of pressure. Sink on the other side of the wall works fine, as does all other faucets in house. Not sure where to begin sorting out this problem, and welcome any suggestions.

This morning while taking a shower, I was greeted with a grumbling in the pipes and then a loss of pressure. Sink on the other side of the wall works fine, as does all other faucets in house. Not sure where to begin sorting out this problem, and welcome any suggestions.
Some crud came up your supplies and is now blocking the inlets of your shower valve. You will have to shut the water off and open up the valve, check the cartridge or seats for blockage and then with the valve still open turn the water back on for a minute to flush out the supplies. To be more specific about opening up the shower valve I'll need the brand name and its approximate age. Regards, Tom

Not to bad, once I got a chance to look at it tonight. It turned out to be the shower head, which we replaced easily.

Thanks for your help!