Most are a result of minor developmental anomalies whilst in the womb causing either malformation of blood vessels or an unusually high concentration of melanocytes in an area of the skin. Some...
Birthmarks come from a mutation in your chromosomes in your body. No, it doesnt mean your a mutant or alien... It just means one of your chromosomes grew too fast.
Vasculitis is not a hereditary disease and it does not run in families. Some types may be caused by infections, for instance with hepatitis viruses and some bacteria. Sometimes it occurs as an...