A nurse is monitoring a client using triamcinolone ointment for atopic dermatitis. Which adverse effect should the nurse be vigilant about?

Thinning of the skin is a significant adverse effect that the nurse should monitor when a client is using triamcinolone ointment for atopic dermatitis. Triamcinolone is a corticosteroid, and its application, especially over long periods or on larger areas of the skin, can lead to skin atrophy. This condition is characterized by the thinning of the skin layers, making the skin more fragile and susceptible to injury, bruising, and tears. It is particularly important for the nurse to be vigilant about this effect in order to ensure the safety and skin integrity of the client.

Other options, while they may be associated with corticosteroid use, do not carry the same level of concern in the context of topical applications like triamcinolone ointment. Increased hair growth, development of acne, and hyperpigmentation can occur with different types of medications or with systemic corticosteroid use, but the direct and more immediate risk with topical steroids is the thinning of the skin. Therefore, close monitoring for signs of skin atrophy and educating the client about proper usage and duration of treatment are essential nursing interventions in this scenario.