with different types of foam systems for structural firefighting and some have deployed front-line. apparatus with class A foam systems as an added tool in their firefighting arsenals. TYPES OF FOAM DELIVERY SYSTEMS. Class A foams consist of a mixture of water, foam concentrate, and air.
Skin Reaction from Vitamin D. I took a natural vitamin D3 supplement for several weeks and had a skin reaction on my back that slowly went away after I stopped taking it. There were no other variables that could have interfered at that time.
Medications can cause itching of the skin indirectly from drying of the skin or directly by causing an allergic reaction. Water pills, also called diuretics, used to treat high blood pressure or swelling of the extremities can lead to dry skin and itching particularly in the winter.