Symptoms of vitamin C deficiency in the body: 1. swollen gums and bleeding gums, when brushing your teeth, you should consider the possibility of vitamin C deficiency when you find swollen gums. 2. easily appear subcutaneous petechiae, so when the subcutaneous petechiae after trauma and bump are not easily absorbed and the area is large, consider the possibility of vitamin C deficiency. 3. easily appear mouth ulcers and ulcers of skin mucosa, if you find mouth ulcers that do not heal easily for a long time, consider the possibility of vitamin C deficiency. 4. If you find a mouth ulcer that does not heal easily, think about the possibility of vitamin C deficiency. 4, prone to osteoporosis, when there is an unexplained weakness of the waist and knees, back and leg pain, consider the possibility of vitamin C deficiency.