Which medication is NOT a predisposer to heat illness?

Which medication is NOT a predisposer to heat illness?

• A. Decongestants
• B. Antihistamines
• C. Diuretics
• D. NSAIDs

Answer: (D)

Heat illness comes from when the body's ability to dissipate heat is overwhelmed, so medications that interfere with cooling tend to increase risk. Decongestants can cause peripheral vasoconstriction and reduced sweating, which limits heat loss and raises core temperature. Antihistamines often have anticholinergic effects that dry secretions and decrease sweating, further reducing evaporative cooling. Diuretics promote fluid and electrolyte losses, which can worsen dehydration and heat tolerance. NSAIDs, however, do not directly impair sweating or fluid balance in typical use, so they are not considered a predisposer to heat illness.

Heat illness comes from when the body's ability to dissipate heat is overwhelmed, so medications that interfere with cooling tend to increase risk. Decongestants can cause peripheral vasoconstriction and reduced sweating, which limits heat loss and raises core temperature. Antihistamines often have anticholinergic effects that dry secretions and decrease sweating, further reducing evaporative cooling. Diuretics promote fluid and electrolyte losses, which can worsen dehydration and heat tolerance. NSAIDs, however, do not directly impair sweating or fluid balance in typical use, so they are not considered a predisposer to heat illness.