Tap only drips when upstairs tap runs

[keycare]

Hi,

My kitchen mono-block ceramic disc tap starts to drip and emit a high pitched wine when an upstairs tap is opened. It doesn't drip at any other time!

Can anyone suggest what may be going on?

Thanks in advance.
Richard.

 

[easyflow]

Some sort of presence in the house, change the tap/s or cartridges if this dont cure it call in a local priest.

 

[sooey]

The only explanation I can think of for that is the disc is worn but held in a sealed position by the standing pressure in the main, open another tap the pressure drops a bit and bobs your uncle.
Change the tap.

 

[keycare]

sounds logical, exorcism it is then