Acquired C1 esterase inhibitor deficiency also known as "Acquired Angioedema" presents with symptoms indistinguishable from hereditary angioedema, but generally with onset after the fourth decade of life.
C4 levels are low and C3 levels are normal.
Read more about Acquired C1 Esterase Inhibitor Deficiency: See Also
Famous quotes containing the words acquired and/or deficiency:
“Those who are esteemed umpires of taste, are often persons who have acquired some knowledge of admired pictures or sculptures, and have an inclination for whatever is elegant; but if you inquire whether they are beautiful souls, and whether their own acts are like fair pictures, you learn that they are selfish and sensual. Their cultivation is local, as if you should rub a log of dry wood in one spot to produce fire, all the rest remaining cold.”
—Ralph Waldo Emerson (1803–1882)
“If a man is a good lawyer, a good physician, a good engineer ... he may be a fool in every other capacity. But no deficiency or mistake of judgment is forgiven to a woman ... and should she fail anywhere, if she has any scientific attainment, or artistic faculty, instead of standing her interest as an excuse, it is censured as an aggravation and offence.”
—E.P.P., U.S. women’s magazine contributor. The Una, p. 28 ( February 1855)