Pathology concepts

Revised 2025-09-04 3:00:16 PM EDT

Educational overview for students preparing for the MBLEx. Informational only; not medical advice.

On intake forms and in session notes you’ll see words like acute, chronic, sign, symptom, incidence, prevalence, contraindication, and many more. These are the grammar of clinical reasoning. When you understand these concepts, you can read provider notes, interpret client histories, and make safe, informed decisions about massage modifications. The MBLEx may test these terms by asking you to contrast similar words or by asking you to consider them in the context of a short scenario.

Time course of a condition

The treatment choices we make often depend on where the client currently is in the time course of their injury and healing:

Definitions

Acute

Acute describes a condition with a rapid onset and typically short duration. In everyday speech it sometimes implies severe, but on exams the emphasis is fast and brief.

Subacute

Subacute is the in‑between phase: after the first flare-up or initial injury but before long‑term remodeling. This word may also be used to refer to the healing/repair period.

Chronic

Chronic means prolonged or long‑term. Intensity can be low or fluctuating; what matters is duration and persistence over time.

Where is the condition?

Definitions

Local

Local problems are limited to a specific region (e.g., a strained hamstring).

Systemic

Systemic problems involve the whole body or multiple systems (e.g., autoimmune flare with fatigue and diffuse pain).

Practice tip

Systemic issues can magnify responses to heat, pressure, and position changes—start conservatively and pace carefully.

How is information reaching the therapist?

Definitions

Sign

A sign is an objective finding another person can observe or measure (e.g., fever, swelling, rash).

Symptom

A symptom is subjective—what the client reports (e.g., pain, nausea, dizziness).

Syndrome

A syndrome is a cluster of signs and symptoms that tend to occur together (the pattern is recognized even if the single cause varies).

Exam trap

Mixing signs and symptoms. Remember: signs are seen; symptoms are said.

Structure changes

Definitions

Lesion

A lesion is any pathologic change in tissue, from a small skin patch to an internal plaque or ulcer.

Stenosis

Stenosis means abnormal narrowing of a canal or opening (e.g., spinal canal, blood vessel). Narrowing can compress nerves or reduce flow and often guides contraindications or positioning choices.

How did the problem start?

Definitions

Etiology

Etiology is the cause (or causes) of a disease or disorder. Some problems are multifactorial: genetics, load, sleep, stress, and environment can all contribute.

Idiopathic

Idiopathic means “unknown cause”. Not “imagined,” simply undetermined.

Congenital

Congenital conditions are present at birth (from genes, development, or prenatal factors).

Trauma

Trauma broadly covers physical or mental injury. In musculoskeletal settings it often means a physical event (fall, collision), but psychological trauma also shapes muscle tone, breathing patterns, and pain experience.

Sidenote

Massage lens

When etiology is unclear (idiopathic), aim for gentle, well‑tolerated inputs and close communication about responses.

Where are we on the clinical timeline?

Definitions

Diagnosis

Diagnosis is the determination of what the condition is (the label that guides care).

Prognosis

Prognosis is the expected course or outcome (e.g., “full recovery expected in six weeks”).

Prodrome/prodromal

Prodrome/prodromal describes early warning symptoms that appear before the fully developed condition (e.g., aura before a migraine).

Practice tip

Clients often book when symptoms are prodromal; choose calm, non‑provocative work and advise medical follow‑up when red flags appear.

What other problems are present?

Definitions

Comorbid/comorbidity

Comorbid/comorbidity means two or more conditions coexist (e.g., diabetes with peripheral neuropathy). Comorbidities compound risk (falls, bruising, poor wound healing).

Sequela (singular) / sequelae (plural)

Sequela (singular) / sequelae (plural) are expected downstream effects that follow a disease, injury, or procedure (e.g., stiffness after immobilization).

Complication

A complication is an unexpected event that occurs during a disease or treatment but is not an inherent part of it (e.g., postoperative blood clot).

Exam pearl

Both sequelae and complications are “after‑effects,” but sequelae are expected, complications are unexpected. That contrast is a classic test item.

Green lights, yellow lights, and red lights to guide your session

Definitions

Indication

An indication is a good reason to use a technique because the technique is likely to have a beneficial effect (e.g., gentle effleurage for anxiety).

Contraindication

A contraindication is a reason to avoid or modify an intervention due to potential harm.

• Absolute contraindication: do not perform the technique at all (e.g., no local massage over a suspected DVT).
• Relative contraindication: proceed with modification and caution (e.g., lighter pressure for a client on anticoagulants).

Practice lens

Always integrate client goals with indications/contraindications; document rationale for your choices.

Population patterns

Definitions

Demographic

A demographic group is an identified population about which data are collected (e.g., adults over 65; distance runners; postpartum clients).

Incidence

Incidence counts new cases during a time period in a specific population—think “fresh diagnoses.”

Prevalence

Prevalence measures how many total cases exist at a moment or over a period—the proportion currently affected.

Morbidity

Morbidity refers to disease burden—either the state of illness or the ratio of sick to well within a population.

Mortality

Mortality is the death rate from a specific problem.

Exam pearl

Incidence = incoming; prevalence = present. Morbidity ≠ mortality—one describes illness, the other death.

Patterns of spread

Definitions

Endemic

Endemic conditions occur consistently within a particular region or population (a local “background level”).

Epidemic

An epidemic is a sudden increase in cases upon a community or region (a spike above expected).

Pandemic

A pandemic is global spread across populations and continents.

Massage lens

During community surges, clinics adjust screening, spacing, and sanitation; therapists modify session length, contact, and draping protocols accordingly.