Medically reviewed by Dr. Alan S. Bader, DC — Chiropractic Physician, Nevada License B-567 · Dr. Bader · Dr. Doyle · Last reviewed: July 2026
Every family has a firm opinion, half of them opposite. Ice or heat comes down to two questions: is this injury FRESH, and is anything SWOLLEN? Answer those and the drawer you open picks itself.
The rule
Fresh injury (first 24–72 hours) or visible swelling → cold. 10 to 15 minutes, cloth barrier, hour off between rounds. Cold limits the inflammatory flood and numbs the alarm. Older, stiff, achy, guarded patterns → heat. 15 to 20 minutes of moist heat coaxes blood flow and lets guarded muscle stand down — ideal before stretching or activity.
The classic mismatch: heating a fresh sprain (feels lovely, swells worse) and icing a chronic stiff back into deeper guarding. When genuinely unsure in the first two days: cold.
The fine print
Skin checks every few minutes for anyone with reduced sensation, diabetes or circulation issues; never sleep on a heating pad; never ice bare skin into numbness-then-burn. Contrast (alternating) has fans for stubborn subacute soreness — evidence is modest, harm is low, feel free.
Both tools are escorts, not treatments: they manage symptoms while movement and time do the healing. If you're re-icing the same spot for the third week, the spot is asking for an examination, not a better freezer.
What we actually use them for
In-office, cryotherapy and moist heat are staging tools — calming tissue so hands-on care and exercise can do the durable work. Home use mirrors that: cold to survive the first days, heat to unlock movement sessions, movement to actually change the story.
Rule of thumb to keep: temperature comforts; motion heals. Use the first to enable the second.
This page is education, not medical advice for your specific situation — an examination is how care decisions get made. If you may be experiencing an emergency, call 911. Full medical disclaimer.
Related: Physiotherapy → · Strains →