Differential Diagnosis for Cupping on Neck

• Single most likely diagnosis
  • Pityriasis versicolor: This condition is a common fungal infection of the skin that can cause cupping or scaling on the neck, among other areas. It's more likely in warm and humid environments.
• Other Likely diagnoses
  • Seborrheic dermatitis: A skin condition that can lead to scaly patches, red skin, and stubborn dandruff, often affecting oily areas of the body like the neck.
  • Contact dermatitis: An allergic or irritant reaction to something that has come into contact with the skin, potentially causing cupping or scaling if the reaction is severe enough.
  • Psoriasis: An autoimmune condition that speeds up the life cycle of skin cells, causing cells to build up rapidly on the surface of the skin, leading to scaling and possibly cupping on the neck.
• Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
  • Cutaneous T-cell lymphoma (Mycosis fungoides): A rare type of skin cancer that can mimic various skin conditions, including those causing cupping or scaling on the neck. Early diagnosis is crucial for effective treatment.
  • Sarcoidosis: A condition where inflammatory cells clump together in various organs, including the skin, potentially causing lesions or rashes that could be mistaken for cupping.
• Rare diagnoses
  • Keratosis pilaris: A harmless condition that causes small, rough patches on the skin, potentially leading to a sensation or appearance that could be described as cupping, though it's less common on the neck.
  • Lichen planus: An inflammatory condition that affects mucous membranes inside the mouth and can sometimes cause skin lesions, potentially leading to scaling or cupping in rare cases on the neck.