Closed mouth pimples on the neck, also known as whiteheads, are a type of acne that can be removed with medication and photodynamic therapy. Whitehead pimples mainly appear as small pinhead-sized pimples and are found on the forehead, nose, and other seborrheic areas of the skin. When whitehead pimples appear on the neck, they can be treated by topical tazarotene gel, benzoyl peroxide, erythromycin, azelaic acid and other medications, and in severe cases, oral doxycycline, minocycline, isotretinoin and other medications can be taken at the same time. The use of drugs should be carried out under the guidance of medical professionals to avoid adverse reactions. In addition, photodynamic therapy can destroy the Propionibacterium acnes bacteria and reduce the inflammatory reaction, thus achieving the purpose of treating whiteheads. If you have whiteheads on your neck, it is recommended that you seek medical attention in a timely manner and treat the symptoms under the guidance of a doctor, rather than using medication on your own.