Eczema is the most common skin condition, especially in children. It affects one in five infants but only around one in fifty adults. It is now thought to be due to “leakiness” of the skin barrier, which causes it to dry out and become prone to irritation and inflammation by many environmental factors.
Hives are an inflammation of the skin triggered when the immune system releases histamine. This causes small blood vessels to leak, which leads to swelling in the skin. Swelling in deep layers of the skin is called angioedema. There are two kinds of urticaria, acute and chronic.
Hereditary angiodema (HAE)
Hereditary angiodema (HAE) is a rare but serious genetic condition involving swelling in various body parts including the hands, feed, face, intestinal wall and airways. It does not respond to treatment with antihistamines or adrenaline, so it is important to go see a specialist.