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Pathology Encyclopedia

Entry-level definitions plus the massage decision that matters. This is a study index, not a diagnostic manual.

Musculoskeletal

Adhesive capsulitis shoulder

Painful progressive restriction of glenohumeral motion (“frozen shoulder”). Work within tolerance; do not force restricted ROM.

Bursitis

Inflammation/irritation of a bursa. Avoid aggressive direct pressure over an acutely inflamed bursa.

Sprain

Ligament injury. Acute severity determines protection/referral; do not aggressively massage a newly injured unstable joint.

Strain

Muscle or tendon injury. Acute tissue irritability guides local avoidance/modification; later rehabilitation differs from acute care.

Tendinopathy / tendinitis

Tendon pain/disorder. “Tendinitis” implies inflammation but chronic tendon disorders are not always primarily inflammatory. Avoid provoking highly irritable tissue.

Osteoarthritis

Degenerative whole-joint disease involving cartilage, bone and other joint tissues. Comfortable movement/massage may be useful; acute pain and tolerance guide intensity.

Rheumatoid arthritis

Systemic autoimmune inflammatory disease. Avoid aggressive work over acutely inflamed joints; consider fatigue, medications and systemic status.

Osteoporosis

Reduced bone strength and increased fracture risk. Modify force, leverage and positioning.

Gout

Inflammatory arthritis caused by monosodium urate crystal deposition. An acutely hot, exquisitely painful joint should not receive direct massage.

Ganglion cyst

Fluid-filled cyst often near wrist/hand joints or tendon sheaths. Do not attempt to crush or “break” it.

Baker cyst

Popliteal synovial-fluid cyst often related to knee pathology. Avoid aggressive posterior-knee pressure; new calf swelling needs differential medical evaluation.

Plantar fasciopathy

Heel/plantar pain commonly involving plantar fascia enthesis and load sensitivity. Avoid assuming all heel pain is the same condition.

Patellofemoral pain

Pain around/behind patella associated with loading tasks. Do not force painful knee mechanics.

Osgood-Schlatter disease

Traction apophysitis at tibial tuberosity in growing adolescents. Avoid aggressive pressure over the painful prominence.

Disc disorder

Intervertebral disc degeneration, protrusion or herniation may or may not correlate with symptoms. Progressive weakness, bowel/bladder changes or saddle sensory loss are urgent red flags.

Spondylosis

Degenerative changes of the spine. Symptoms and neurological status matter more than the imaging word alone.

TMJ disorder

Group of jaw-joint/masticatory disorders involving pain, movement or related structures. Stay within scope and avoid forceful joint manipulation.

Muscle / pain syndromes

Fibromyalgia

Chronic widespread pain condition with altered pain processing, fatigue and other symptoms. Pressure tolerance varies greatly; “deep is better” is inappropriate.

Myofascial pain syndrome

Regional pain syndrome often discussed with trigger points. Use symptom-guided, evidence-aware treatment rather than claiming a palpable knot is objectively proven pathology.

Torticollis

Abnormal neck posture/rotation with multiple possible causes. Sudden or unexplained cases require appropriate evaluation.

Whiplash-associated disorder

Symptoms after acceleration-deceleration injury can include neck pain, headache and neurological symptoms. Acute trauma/red flags require medical assessment; later massage must be symptom guided.

Nervous system

Carpal tunnel syndrome

Median nerve compression at carpal tunnel. Avoid irritating symptomatic nerve tissue; assess symptoms and refer when progressive.

Peripheral neuropathy

Peripheral nerve dysfunction causing sensory/motor/autonomic changes. Reduced sensation changes pressure and heat safety.

Multiple sclerosis

Immune-mediated CNS demyelinating disease. Adapt to fatigue, heat sensitivity, mobility and current neurological symptoms.

Sciatica

Common term for radiating symptoms involving lumbosacral nerve roots/sciatic distribution. It is a symptom pattern, not a muscle diagnosis. Progressive neurological deficits are referral concerns.

Cardiovascular

Hypertension

Persistently elevated arterial blood pressure. Stability, symptoms, medication and medical management determine planning; avoid outdated universal massage cutoffs.

Varicose veins

Dilated superficial veins related to venous valve dysfunction. Avoid aggressive direct pressure over affected vessels.

DVT

Deep vein thrombosis can embolize and become life threatening. Suspected DVT is a do-not-massage-and-refer situation.

Raynaud phenomenon

Episodic vasospasm, often fingers/toes, causing color and sensation changes. Avoid extreme thermal stress and adapt to current symptoms.

Integumentary / infectious

Psoriasis

Chronic immune-mediated inflammatory skin disease; not contagious. Avoid cracked/open/very irritated plaques as needed.

Tinea pedis

Fungal infection (“athlete's foot”). Avoid affected contagious tissue and prevent cross-contamination.

Cellulitis

Bacterial infection of deeper skin/subcutaneous tissue, commonly red, warm, swollen and painful. Requires medical treatment, not massage over the area.

Herpes lesions

Active viral lesions are locally contagious. Avoid direct contact and follow hygiene precautions.

Endocrine / metabolic

Diabetes mellitus

Chronic glucose-regulation disorder. Massage considerations can include neuropathy, wounds, vascular disease, glucose timing and medication/insulin effects.

Thyroid disorders

Hyper- and hypothyroid states can affect energy, temperature tolerance, cardiovascular function and other systems. Do not manipulate the thyroid gland to change hormone output.

Respiratory / digestive

Asthma

Chronic inflammatory airway disease with episodic bronchoconstriction. Position for breathing comfort; acute severe attack is an emergency issue.

GERD

Reflux of gastric contents into esophagus. Position and meal timing may affect comfort.

Hernia

Protrusion of tissue through a weakened opening. Do not use forceful pressure intended to “push it back in.”

Red-flag rule

Massage therapists recognize concerning patterns but do not diagnose them. New chest pain, severe shortness of breath, stroke signs, suspected DVT, major trauma, uncontrolled bleeding, severe allergic reaction, rapidly progressive neurological loss or other emergency presentations require appropriate medical response.