The first possibility would be a lack of water. followed by bad draining, or root diseases
Lack of its needs, water, sunlight...etc.
Something is happening in the growth.
A Stroke!! see a dr!
Smooth muscles
Evan droop his head.
The cells lose water and become flaccid, which in turn causes the entire flower to droop (or 'wilt')
why do plants droop when no water
When the water of the plant is sucked out of the plant, and the plant doesn't have anymore water so the leafs droop!
this tree is called a weeping willow, there is also the rain tree with golden flowers that droop.
Aw, don't let your face droop.
That could be serious things such as a stroke to non-serious things such as Bell's Palsey. Many of the causes are treatable but time is of the essence to you should see a doctor immediately.
John Percival Droop was born in 1882.