Handheld shower hoses often seal against a flat washer inside the swivel coupling. Water appearing there while the shower runs can come from a worn washer, a damaged sealing face, or a split hose near the end fitting.
Watch where the water first appears
Note whether it starts where the nut meets the fixture or farther down the hose. If the hose leaks only when bent, share that pattern. Stop using the fixture if water is escaping beyond the shower enclosure.
Match the seal to the hose design
Share the model and photos of both ends. A technician can check whether the coupling uses a washer, whether it swivels freely, and whether the hose itself needs replacement.
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