Albert Barnes Commentary Lamentations 4:8

"Their visage is blacker than a coal; they are not known in the streets: Their skin cleaveth to their bones; it is withered, it is become like a stick." — Lamentations 4:8 (ASV)

Their visage ... — Their form (their whole person, see 1 Samuel 28:14)... as noted in the margin. See Job 30:30.

It is withered, it is become like a stick — or, it has become dry like a piece of wood.