Strange electrical behavior with PIC16F684

[sougata]

When I touch any pin, an int is triggered on portA.5 (RA5).

WHY???

Hi,

Is your PORTA.5 changing all the time. Please note that the latch that holds the value for a mismatch is not cleared upon MCLR reset. Thus depending on your code there may be a condition where your PIC resets and you don't realize. (If you are manually polling values)

Please post your complete code and schematic.