ORF, a viral infection typically transmitted from sheep or goats, presents in darker-skinned individuals as firm, red or purple nodules, usually on the hands or arms, which may blend more with the natural skin tone and be less noticeable in early stages. The lesions are often painless but can be accompanied by mild itching or swelling, and they typically resolve on their own within 6-8 weeks. Treatment is generally supportive, focusing on wound care and preventing secondary bacterial infections, though antiviral therapy may be considered in severe or prolonged cases.