This study will look at whether a topical medication called minocycline foam (AMZEEQ) can help treat confluent and reticulated papillomatosis (CARP), a skin condition that causes dark, scaly patches. We will also evaluate how safe the treatment is and how satisfied patients are with it. The study is open to participants ages 9 years and older.

Participants will apply minocycline foam to one side of the affected skin and a moisturizing cream (emollient) to the other side for 5 weeks. This allows us to compare the two treatments in the same person. After this period, participants may choose to continue using the minocycline foam on all affected areas.

During the study, participants will attend follow-up visits where photos of the skin will be taken and the condition of the skin will be evaluated. Participants will also complete brief surveys about how their skin condition affects their quality of life and how satisfied they are with the treatment. The research team will monitor treatment use and any side effects.

The goal of this study is to learn whether topical minocycline could be a safe and effective treatment option for CARP, potentially providing an alternative to oral antibiotics.