Heat packs in physical therapy

A therapist may use a moist or dry heat pack before stretching or movement work. Gentle warmth can help muscles feel less guarded and may make a stiff area easier to move. It does not diagnose the cause of pain or repair an injured structure. Heat is usually one part of a session that may also include assessment, exercise, manual techniques, or advice about activity. The suitable area, temperature, and application time depend on your skin, sensation, circulation, and the problem being treated.

Follow the therapist’s instructions and keep a cloth barrier between the pack and skin unless your clinician gives different guidance. Check the skin during use, keep the pack in place rather than sleeping with it, and remove it if burning, stinging, marked redness, or discomfort develops. Take extra care if you have reduced sensation, circulation problems, diabetes, broken skin, or difficulty noticing temperature. Do not place heat over a fresh wound or an area that is acutely swollen unless your clinician has advised it. The [Physiotherapy](/conditions/cervical-spondylosis/) link provides related condition reading.

Stop using heat and seek advice for blistering, persistent redness, a burn, increasing swelling, or pain that worsens after application. Ask before using a pack over numb skin, infected skin, a recent surgical site, or an area with poor blood flow. Seek urgent help for severe pain with loss of movement, sudden weakness, chest pain, or difficulty breathing. Heat should not delay assessment of a new or rapidly worsening symptom.

Ask whether heat or cold better suits your symptoms, where the pack may be placed, how long to use it, and whether your medicines or skin condition change the advice. Clarify whether warmth should come before exercises and what skin changes mean you should stop.