The British thermal unit (BTU or Btu) is a traditional unit of work equal to about 1055 joules. It is the amount of work needed to raise the temperature of one pound of water by one degree Fahrenheit (Physical analogue: one four-inch wooden kitchen match consumed completely generates approximately 1 BTU).
Blisters on feet can be caused by numerous things, including: 1  Forceful rubbing or friction on the foot. 2  Bone spurs or exostoses. 3  Burn. Freezing.  Chemical 1  exposure. Infection.  Allergic 1  reaction. Pinching  skin. Medical 1  condition. Foot perspiration.  Fungal infections such as Athletes foot.
If you have dyshidrotic eczema, youâll notice blisters forming on your fingers, toes, hands, or feet. The blisters may be more common on the edges of these areas and will probably be full of fluid. Sometimes, large blisters will form, which can be particularly painful. The blisters will usually be very itchy and may cause your skin to flake. Affected areas may become cracked or painful to the touch.