Aanand Geria, MD FAAD on Instagram: "Pityriasis rosea is a temporary skin condition that starts with a single “herald patch,” a large, oval-shaped rash, followed by smaller, scaly rashes that spread in a Christmas tree pattern on the chest, back, or abdomen. It’s often triggered by a viral infection, though it’s not contagious. Common in young adults, it typically resolves on its own within 6-8 weeks. Symptoms like itching can be managed with antihistamines, soothing creams, or oatmeal baths #De