Shingles - causes, symptoms, treatment, vaccination. Shingles is a viral infection, the first symptom of which is usually a tingling, sharp, burning pain under the skin, followed after 1-3 days by a red rash and blisters. Shingles is caused by the same virus as chickenpox (varicella zoster).
Rating: Be the first to rate this item. O.F.A.C. stands for the Office of Foreign Assets Control and is a part of the U. S. Department of the Treasury. The following definition was found on the OFAC web site:
The expression f(x) means plug a value for x into a formula f ; the expression does not mean multiply f and x! Don't embarrass yourself by pronouncing (or thinking of) f(x) as being f times x. In function notation, the  x  in  f(x)  is called the argument of the function, or just the argument.