In a war-devastated district of Sudan's capital, Abbas Mohammed Babiker says he and his family have only been able to eat once a day. Now even that is in doubt, but on Sunday a citizens' support group issued an urgent appeal for donations to help people like him.
"We only have enough for two more days," Babiker said from Khartoum North, where residents said at least one person, a local musician, has already died from hunger.
Since the conflict erupted in Sudan on April 15, more than 2.6 million people have been internally displaced, mostly from Khartoum, according to the International Organization for Migration.
Thousands who remain in the capital, particularly in Khartoum North, are trapped at home without water since the local water station was damaged at the start of the war.
Residents say there is only intermittent electricity and food has nearly run out.
Across the country, about one-third of the population already faced hunger even before the war began, said the UN's World Food Programme. Despite the security challenges, the agency says it has reached more than 1.4 million people with emergency food aid as needs intensify.
"With the fighting, there is no market any more and anyway we have no money," said another resident of Khartoum North, Essam Abbas.
To help them, the local "resistance committee", a pro-democracy neighbourhood group, issued its emergency appeal.
"We have to support each other, give food and money and distribute to those around us," the committee wrote on Facebook.
In adjacent Omdurman, Khartoum's other battle-scarred sister city, locally known violinist Khaled Senhouri "died from hunger" last week, his friends wrote on Facebook.
In his own online posts, Senhouri had said he was unable to leave home because of the fighting and had tried to hang on with the supplies that he had. It wasn't enough.