Differential Diagnosis for Red Patchy Lesions on Head that Burn at First

• Single most likely diagnosis
  • Seborrheic dermatitis: This condition is characterized by a red, itchy, and flaky rash, often on the scalp, and can cause a burning sensation. It's a common condition that matches the description provided.
• Other Likely diagnoses
  • Contact dermatitis: This is a type of skin inflammation caused by contact with irritants or allergens, which can lead to red, patchy lesions that may burn, especially if the causative agent is still in contact with the skin.
  • Psoriasis: While more commonly associated with plaques, psoriasis can present with red, patchy lesions, and the initial stages can include a burning sensation.
  • Eczema (atopic dermatitis): Eczema can cause red, itchy, and sometimes burning patches on the skin, including the head, especially in individuals with a history of allergies or asthma.
• Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
  • Lupus: Systemic lupus erythematosus (SLE) can cause a butterfly-shaped rash across the cheeks and nose, but it can also present with lesions on the scalp. It's crucial to consider lupus due to its potential for serious systemic complications.
  • Malignancy (e.g., cutaneous T-cell lymphoma): Certain types of skin cancer, like cutaneous T-cell lymphoma, can present with patches or lesions on the skin, including the head. Early diagnosis is critical for effective treatment.
• Rare diagnoses
  • Pemphigus: An autoimmune disease that causes blistering of the skin and mucous membranes. While rare, it can present with lesions on the head and can be life-threatening if not treated.
  • Dermatomyositis: An inflammatory disease characterized by skin rash and muscle weakness. The rash can appear on the face, including the head, and is often accompanied by other systemic symptoms.