As a mother of three and through her work at the Anne Foundation, Ms. Raventós said she was witnessing difficulties among some children, from nutrition to sleeping problems, as well as strong mood swings. For others, Ms. Raventós said, the “big risk is that boredom turns into complete apathy,” particularly given the lack of physical movement and variety in their activities.

As Spain will remain under lockdown until May, public pressure mounted in recent days to ease the rules for children, and some Spanish regions are now working on plans to allow them outdoors.

“If adults can go for a walk with a dog, and now some nonessential economic activities are resuming, why do our boys and girls have to keep waiting?” Barcelona’s mayor, Ada Colau, wrote on Facebook, urging the authorities to “free our children.” The hashtag #NiñosEnLaCalleYa, or “children on the streets now,” has circulated widely on social media.

Regional authorities in the Madrid region suggested this week that children under 14 should be allowed to go out for an hour once a day, but without their bicycle or scooter.

But the Madrid plan, as well as those outlined by other regions, would still need approval from the central government.

In the meantime, parents are doing their best to keep their children busy and happy.