Stiffness describes a broad symptom of reduced ease, flexibility, or fluency of movement — present across a wide range of musculoskeletal, neurological, and systemic conditions. Its diagnostic significance depends heavily on context: morning stiffness lasting more than 45 minutes strongly suggests inflammatory arthritis; stiffness resolving within 15 minutes suggests mechanical cause; stiffness in a limb that resists passive movement throughout its range is neurological rigidity. General stiffness across the body is characteristic of fibromyalgia, hypothyroidism, and the immediate post-exertional period of intense exercise.

What lifestyle changes can help with stiffness?

Gentle stretching and warm-up before activity. Heat therapy before exercise to increase tissue extensibility. Regular aerobic and flexibility exercise to maintain joint and muscle mobility. Aquatic exercise for inflammatory conditions. Address sedentary behaviour which worsens stiffness.

What integrative approaches support stiffness?

Morning stiffness lasting more than 45 minutes is a diagnostic criterion for rheumatoid arthritis and ankylosing spondylitis. Exercise has the strongest evidence for reducing stiffness across most musculoskeletal conditions. Hydrotherapy and aquatic exercise are particularly evidence-supported for inflammatory arthritis.

When should I seek professional support for stiffness?

Morning stiffness lasting more than 45–60 minutes (possible inflammatory arthritis) Rapidly progressive stiffness particularly in older adults Stiffness with associated weakness or loss of dexterity Stiffness following initiation of antipsychotic medication (extrapyramidal side effects)

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Stiffness

A sensation of reduced flexibility or resistance to movement in muscles, joints, or the body as a whole. May be acute or chronic, and is associated with a wide range of musculoskeletal, inflammatory, and neurological conditions.

Understand what may be causing this

Reviewed by Internal Medical Editorial Team · Integrative Health Content Review26 March 2026Moderate Evidence

Quick answer

Stiffness (ICD-10: M25.6; ICD-11: FA50) is associated with inflammatory arthritis, osteoarthritis, fibromyalgia, and Parkinson's disease. Morning stiffness lasting more than 60 minutes with joint swelling suggests inflammatory arthritis. Exercise and heat therapy have the strongest evidence for relief.

Recognition