Voltaren Gel (diclofenac sodium topical gel) is a popular over-the-counter NSAID medication for localized pain relief, but it has specific contraindications and precautions. While effective for joint pain like arthritis, it should be avoided in certain populations (pregnant/nursing individuals, those with heart/kidney disease) and on specific body areas (open wounds, non-joint regions). Side effects like skin irritation or allergic reactions also warrant discontinuation. Its delayed onset of action (up to 7 days) means it's not ideal for immediate relief needs.

Key Points Explained:
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Medical Conditions Requiring Avoidance
- Heart disease: Systemic absorption of diclofenac may increase cardiovascular risks (e.g., heart attack/stroke).
- Severe kidney disease: NSAIDs can impair kidney function; topical use still poses a risk due to partial absorption.
- Pregnancy/nursing: Potential harm to fetal development or infant via breast milk.
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Application Restrictions
- Avoid on open wounds, damaged skin, or mucous membranes (increases systemic absorption and irritation risk).
- Not FDA-approved for back, hips, or shoulders—these larger areas may lead to excessive dosing.
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Adverse Reactions
- Discontinue if skin redness, itching, or blistering occurs (signs of allergic contact dermatitis).
- Oral NSAID users should avoid concurrent use to prevent overdose.
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Therapeutic Limitations
- Not for actinic keratosis (a precancerous skin condition)—misapplication delays proper treatment.
- Delayed relief (up to 7 days) makes it unsuitable for acute pain emergencies.
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Population Exclusions
- Children under 18: Safety/efficacy not established.
- Aspirin-sensitive asthma patients: May trigger bronchospasm.
For alternatives, consider consulting a healthcare provider about non-NSAID topicals (e.g., capsaicin) or physical therapies. Always patch-test first and adhere to dosage limits (4g per joint daily).
Summary Table:
| Scenario | Reason to Avoid |
|---|---|
| Heart/kidney disease | Systemic absorption may worsen cardiovascular/kidney risks. |
| Pregnancy/nursing | Potential harm to fetus or infant via breast milk. |
| Open wounds/damaged skin | Increases irritation and systemic absorption. |
| Children under 18 | Safety not established. |
| Aspirin-sensitive asthma | May trigger bronchospasm. |
| Non-joint areas (e.g., back) | Not FDA-approved; risk of excessive dosing. |
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