Perioral dermatitis
Perioral dermatitis is a common skin rash on the face. Symptoms include multiple small (1–2 mm) bumps and blisters sometimes with background redness and scale. The lesions are localized to the skin around the mouth and nostrils. It can be persistent or recurring and resembles particularly rosacea and to some extent acne and allergic dermatitis.

Topical steroids may be the cause of the condition and moisturizers and cosmetics may also contribute to the development of skin disease. Treatment is typically by stopping topical steroids and cosmetics, and in more severe cases, taking tetracyclines by mouth. Stopping steroids may initially worsen the rash.

The condition is estimated to affect 0.5-1% of people a year in the developed world. Up to 90% of those affected are women between the ages of 16 and 45 years.

Treatment ― OTC Drugs
Perioral dermatitis is often caused by chronic contact dermatitis of cosmetics, so applying cosmetics around the mouth is not recommended. Taking OTC antihistamine may be helpful. Treatment often required over several months.
#OTC antihistamine
  • Papules around the mouth and nostrils with some background redness are often observed in the form of a patch or pustule around the mouth.
    References Perioral Dermatitis 30247843 
    Perioral dermatitis is a benign eruption that occurs most commonly in young, female adults, consisting of small inflammatory papules and pustules or pink, scaly patches around the mouth. Although the perioral region is the most common area of distribution, this disease also can affect the periocular and paranasal skin. For this reason, it is often referred to as periorificial dermatitis. Topical steroid use to the face can trigger this, and therefore, a primary recommendation for treatment would be discontinuation of steroid application by the patient. Other treatment approaches include topical metronidazole, topical calcineurin inhibitors, and oral tetracycline antibiotics. Perioral dermatitis often responds readily to therapy but can be chronic and recurrent.
     Allergic contact cheilitis caused by propolis: case report 35195191 
    Propolis is a lipophilic resin extracted from plants by bees. The purpose of this case report was to show the importance of this substance as cause of allergic contact cheilitis. A 21-year-old female patient complained of pruritic perioral eczema for 5 years. In the past months it also affected the neck. After diagnosing contact dermatitis, she was submitted to a patch test with a Latin American baseline series. The result was strongly positive for propolis (++)
     Predictive Model for Differential Diagnosis of Inflammatory Papular Dermatoses of the Face 33911757 
    Various inflammatory skin diseases characterized by erythematous papules that most often affect the face include clinically common folliculitis and rosacea, and relatively rare eosinophilic pustular folliculitis (EPF), granulomatous periorificial dermatitis (GPD), and lupus miliaris disseminatus faciei (LMDF).