Side EffectsStinging, burning, , irritation, dryness, or redness of the may occur when this is first applied to the skin. These effects should disappear in a few days as your body adjusts to the medication. If any of these effects persist or worsen, notify your doctor or promptly.Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication not have serious side effects.Tell your doctor right away if any of these unlikely but serious side effects occur: , skin thinning/discoloration, , extreme/unwanted growth, " bumps" ().Skin infections can become worse when this medication is used. Notify your doctor promptly if redness, swelling, or irritation does not improve.Rarely, it is possible this medication will be absorbed from the skin into the bloodstream. This can lead to side effects of too much corticosteroid. These side effects are more likely in children, and in people who use this medication for a long time or over large areas of the skin. Tell your doctor right away if any of the following side effects occur: unusual/extreme tiredness, , , swelling /feet, increased thirst/urination, problems.A very serious to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious , including: , /swelling (especially of the face//throat), severe , .This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.. This medication is used to treat a variety of skin conditions (e.g., eczema, dermatitis, allergies, rash). Betamethasone reduces the swelling, itching, and redness that can occur in these types of . Topical corticosteroids, especially the potent agents (e.g., augmented betamethasone, clobetasol, diflorasone, and halobetasol), are generally not recommended for use in the treatment of diaper rash..