This section addresses many health issues that could possibly effect those with real vampirism or be entirely mistaken as vampiric conditions. Tons of information in this section to examine and assist.
Anemia in general is one of many conditions in which the circulating red blood cells are either deficient in number or in total hemoglobin content, relative to the normal ranges.
Some people take iron because they feel tired and "run down" all the time, and they believe that they have anemia and thus, need to take iron. In the vampire community, I have seen people automatically dish out the advice "Oh, you're a vampire? You need iron!"
Occaisionally someone gets the idea that blooddrinking is one of the many forms of Pica, and assumes that anyone engaging in blooddrinking practices are suffering from it. This is usually followed by advice to see the doctor (which, actually, is good advice anyway...) to get the "problem" fixed. This article will explain what Pica is - and isn't - and explain why blooddrinking is not Pica behavior.
Insomnia is a common problem characterized by a persistent difficulty falling asleep and/or staying asleep, despite having ample time to do so. This can range from mild to severe, depending on how often and long it happens for. A patient with insomnia may be tired and grumpy during the day, have trouble concentrating, and be prone to falling asleep. Many people are sleepy during the day just because they went to bed too late the night before - in this case, they don't have a sleep disorder, they just simply didn't get enough sleep for when they have to get up the next day.
Due to the complex and varied nature of thyroid disease, this article makes the assumption that the reader is seeking general information appropriate to either young adults or adults rather than young children or infants. The links at the end of the article lead to more complete, detailed information if what you are seeking is beyond the scope of this article. There are many, MANY causes and treatments, for example, that are not covered in this basic overview.