In which of the following conditions are mentholated rubs contra-indicated?

AIIMS Bhopal NO - 2018 (Shift-1st)

Pharmacology

Medium

Appeared in: AIIMS Bhopal NO - 2018 (Shift-1st)

Explanation

Mentholated rubs are classified as counter-irritants, designed to create a sensation (like cooling or warmth) on the skin to distract from deeper musculoskeletal pain.
Applying these substances to broken skin is contraindicated because the protective epidermal layer is missing.
This allows the active ingredients to directly contact sensitive underlying tissues, causing significant pain, burning, and inflammation.
Furthermore, application on non-intact skin can lead to excessive systemic absorption of the ingredients, potentially causing toxicity.

Option A: Low back ache is a primary indication for the use of mentholated rubs to relieve muscle soreness and pain.
Option B: A sprain is a common injury for which topical analgesics like mentholated rubs are recommended to manage pain and discomfort, assuming no break in the skin.
Option C: Pain from osteoarthritis is frequently managed with topical rubs to provide localized relief. It is a standard indication for these products.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Contraindications of Topical Medications as background academic context rather than a clinical decision trigger.
A key nursing responsibility is to assess skin integrity before administering any topical medication. Always inspect the area for cuts, abrasions, rashes, or wounds.
Patient education is critical. Nurses must instruct patients on the proper use of over-the-counter topical analgesics, including the warning to apply only to intact skin and to wash hands after application.
What if? If a patient has an intact rash (e.g., eczema) over the painful area, the mentholated rub is still generally contraindicated. Inflamed skin can have increased permeability and sensitivity, raising the risk of severe irritation and adverse reactions.

How to Approach the Question

First, identify the core subject of the question: the contraindications for 'mentholated rubs'.
Recognize that mentholated rubs are topical medications that act as counter-irritants on the skin's surface.
Consider the fundamental principle of topical medication safety: the skin must be intact to serve as an effective barrier and prevent irritation or excessive absorption.
Evaluate each option: 'Low back ache', 'Sprain', and 'Osteoarthritis' are conditions involving pain under the skin, which are typical indications for these rubs.
'Broken skin' represents a breach of the skin barrier, which would make the application of an irritant unsafe.
Conclude that broken skin is the condition where the rub is contraindicated.

Concept Tested & Keywords

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E6 Pharmacology KD Tripathi Essentials 9e Part 3 p. 230-232

E6 Nursing Fundamentals Potter Perry 12e Part 6 p. 104-106