Hydrofluoric acid(HF) burn is characterized by progressive tissue necrosis and severe pain. A 31 year old employee in the semiconductor industry came in contact with the 50% aqueous HF through a pin hole in the thumb of his protective gloves. About 2 hours after exposure, h noted deep, severe burning, excruciating pain and svtelling of right thumb. Thereafter, clark bluish eclematous necrotic patches were visible through the nail plate and on the distal end of right thumb. Pain was not effectively relieved by digital nerve block.
Adult ; Burns* ; Gloves, Protective ; Humans ; Hydrofluoric Acid* ; Necrosis ; Nerve Block ; Semiconductors ; Thumb