The nerve plant is grown for its dramatic veining - fine networks of white, pink, or red lacing across deep green leaves. It's also famous for fainting: let it dry out even slightly and the whole plant collapses dramatically, then revives within an hour of watering, which makes it oddly communicative for a fussy plant.
That theatrical wilting is your watering cue, but it's better not to let it get there too often. Fittonia wants consistent moisture and high humidity, which makes it a natural for a terrarium, a bathroom, or a spot near other plants. Keep it out of direct sun and never let it dry out hard.
Medium to bright indirect; direct sun scorches the thin leaves and fades the veining.
Keep evenly moist; water as soon as the surface dries
Sudden collapse means it dried out - water and it revives
Feed with a dilute balanced fertiliser
Pinch flower buds and leggy tips to keep it dense
Raise humidity if leaf edges turn crispy