David said: Confluent and Reticulated Papillomatosis (CARP), a rare skin condition characterized by scaly, hyperpigmented macules, patches, and papules that tend to merge into a net-like pattern on the trunk. It's also known as Gougerot-Carteaud syndrome. CARP typically appears in adolescents and young adults, often on the upper back and chest, but can also occur on the neck, axillae, and groin. Look at the underlying issues liver, gut health, immune system and symptom picture for the specific person who has CARP. That will direct treatment, but initially I would think Gotu Kola, Sarsaparilla, Burdock seed, Milk Thistle seed, possibly Butternut bark.