A woman presents with an itchy rash on her arm that she reports developed after receiving a subcutaneous injection of a biologic agent.
A man presents with multiple erythematous papules and nodules on his chest, arms, and upper back.
A fair-skinned, elderly woman presents for evaluation of a skin lesion on her left jaw.
A patient presents with a large hyperpigmented patch with increased hair growth that began developing on his upper chest and neck around puberty.
An infant is brought to the dermatologist for evaluation of a red lesion on her cheek.