Vitamin C deficiency can lead to scurvy, a disease causing weakened and bleeding gums, spots and bruises on the skin, bleeding in the muscles, and bleeding in the digestive tract. Symptoms include hyperkeratosis, coiled hair, perifollicular hemorrhages, petechiae, purpura, splinter hemorrhages, hemarthroses, subperiosteal hemorrhages, and potentially intracerebral hemorrhages. The document lists two references on vitamin C deficiency and scurvy.

3. Vitamin C
deficiency)
scurvy) connective tissues
follicular
hyperkeratosis, coiled hair, perifollicular
hemorrhages, petechia purpura, splinter
hemorrhages, bleeding gums, hemathroses subperiosteal
hemorrhages
intracerebral
hemorrhages

6. 1.http://th.wikipedia.org/wiki/%E0%B8%A7%E0%B8%B4%E
0%B8%95%E0%B8%B2%E0%B8%A1%E0%B8%B4%E0%B8%9
9%E0%B8%8B%E0%B8%B5
2.http://www.med.cmu.ac.th/hospital/dis/2011/index.php?
option=com_content&view=article&id=78:vitamin-c-
deficiency&catid=19:knowledge2&Itemid=39