Medically reviewed by William Truswell, MD Key Takeaways Different types of pimples can form on your skin, such as papules, pustules, and cysts. Over-the-counter treatments with ingredients like ...

Gram-negative folliculitis (GNF) is one of the most common mimics and complications of acne and acne rosacea. First described by Fulton in 1968, 1 GNF in acne patients is a relatively rare ...

Generalized pustular psoriasis (GPP) is the rarest form of psoriasis, a chronic autoimmune skin condition. Unlike other forms, GPP can be severe or even life-threatening. The disease causes flares of ...