Floodwaters are swallowing straw shelters in the Atash displacement camp north of Nyala, South Darfur.
Rising rainwater has submerged most tents, leaving thousands of displaced residents exposed to the elements.
A local source said conditions are worsening daily as rains continue without pause.
Aid workers fear the fragile shelters could collapse entirely if the downpours persist.
Five cases of watery diarrhea were recorded in the camp within just 24 hours.
Stagnant floodwater has triggered a surge in insect infestations across the settlement, volunteers reported.
Malaria and acute diarrhea cases are climbing sharply, hitting children and elderly residents hardest.
A health worker said local clinics face a severe shortage of malaria medication.
Intravenous fluids and other essential supplies are also running critically low, the worker added.
Volunteers warned that mosquito populations are multiplying unchecked amid a total absence of pesticides.
They cautioned that the camp is edging toward a health disaster that may soon spiral out of control.
Children under five and pregnant women face the greatest risk, aid workers said.
Weakened immunity and poor nutrition leave both groups dangerously vulnerable to infection.
Malaria and intestinal disease could turn severe quickly without proper medical intervention, they warned.
Volunteers appealed to humanitarian organizations for urgent shipments of pesticides and waterproof tarpaulins.
Such supplies, they said, are essential to containing the camp’s spiraling health crisis.
The appeal comes as Sudan’s Meteorological Authority forecasts continued heavy rain and strong winds nationwide.
Displacement camps across Darfur remain especially exposed as the rainy season intensifies.
Humanitarian groups have not yet confirmed whether new aid shipments are being planned.
The situation in Atash reflects broader struggles facing displaced communities across conflict-hit Sudan.
