Which statement correctly contrasts heat cramping and sickling cramps?

• A. Heat cramps have no prodrome; sickling has muscle twinges.
• B. Heat cramping pain is generalized; sickling is pinpoint.
• C. Heat cramping has a prodrome of muscle twinges; sickling has none.
• D. Heat cramps cause swelling of arms; sickling does not.

Answer: (C)

Understanding how prodromes differ helps distinguish heat cramps from sickling cramps. Heat-related cramps are often preceded by a subtle warning sensation—mild muscle twinges or fatigue—as muscles become irritated by dehydration and electrolyte loss. In contrast, a vaso-occlusive crisis from sickle cell disease typically strikes suddenly and severely, without these preceding minor muscle sensations. So, the statement that heat cramping has a prodrome of muscle twinges while sickling cramps have none captures this important difference.