Sympathetic NS

are the sympathetic nerves nerves themselves sensory or is pain sensed by the afferent nerves that travel with them in splanchnic nerves? Thanks

The sympathetic nervous system can still have an afferent component, just like the parasympathetic and peripheral nervous systems do.

Be aware that not all sympathetic neurons travel to ganglions via splanchnic nerves! Some just go right to their target after leaving the sympathetic chain.