<prompt> In which of the following condition sweating is NOT present?Heat syncopeHeat crampsHeat strokeHeat fatigue  <response>: Heat stroke occurs when core body temperature exceeds 40 degC and produces severe central nervous system dysfunction. It results from imbalance between heat production and heat dissipation. The skin is pink or ashen and sometimes, paradoxically, dry, hot and there is complete absence of flushing; dry skin in the presence of hyperpyrexia is viually pathognomonic of heat stroke. Ref: Demling R.H. 2010. Chapter 14. Burns Other Thermal Injuries. In G.M. Dohey Ed, CURRENT Diagnosis Treatment: Surgery, 13e. 