Search Now. Find a Great Dermatologist Near You. Dry scaly skin has been associated with a number of disorders, including bacterial infections (for example, impetigo, staph infections, or erythrasma) and fungal infections (for example, tinea, also known as ringworm).
One vitamin that can upset your stomach when taken in large doses is vitamin C, also called ascorbic acid. Vitamin C plays an essential role in tissue maintenance by promoting the production of collagen -- a protein that makes up a portion of your bones, blood vessels, tendons and ligaments.
Vitamin toxicity or mineral poisoning may cause severe abdominal pain, muscle aches, bone aches, dizziness, confusion, nausea or vomiting and a severe headache. Iron poisoning can induce a coma, cause organ damage and, in some cases, lead to death.