Sweating & Temperature Changes After Quitting Smoking
Sweating and temperature fluctuations after quitting smoking begin within 24-48 hours and peak around days 2-4. Your autonomic nervous system, chronically stimulated by nicotine, is recalibrating its thermoregulation. Expect night sweats, cold hands and feet, and episodes of sweating alternating with chills. Resolves by day 7-10.
Temperature instability during smoking cessation is common but rarely discussed. The autonomic nervous system, which controls your internal thermostat, needs time to adjust after years of nicotine's constant stimulation.
WHEN IT STARTS
Within 24-48 hours as nicotine's sympathomimetic effects on thermoregulation wear off.
WHEN IT PEAKS
Days 2-4, with night sweats being particularly disruptive.
WHEN IT RESOLVES
Day 7-10 for most people. Temperature regulation normalizes completely by day 14.
WHY IT HAPPENS
Nicotine stimulates the sympathetic nervous system, which controls temperature regulation. Chronic smoking kept this system elevated. Removal causes recalibration instability. Cortisol elevation adds to sweating. Vasomotor changes (vessel dilation/constriction) directly affect skin temperature.
WHAT TO DO
Dress in layers. Cool bedroom (65-68°F) with breathable bedding. Stay hydrated. Warm drinks for cold extremities. Don't interpret as illness unless accompanied by fever above 100.4°F.
