Deathwatch beetle. Deathwatch beetle (Xestobium rufovillosum), an anobiid, or borer insect, of the family Anobiidae (insect order Coleoptera) that makes a ticking or clicking sound by bumping its head or jaws against the sides of the tunnels as it bores in old furniture and wood.
1 Superior vena cava syndrome is most often caused by compression of the vein (the superior vena cava), that returns blood from the upper body back to the right atrium of the heart by tumor.  Symptoms include swelling of the face and arms associated with shortness of breath.
Spinal Stenosis Symptoms. There are various spinal stenosis symptoms. The symptoms depend on the severity of the stenosis and the location or the affected part of the body. The following are the most common symptoms of spinal stenosis: Stenosis develops slowly, over time, often undetected at the onset.