Inflammatory acne presents as erythematous papules and pustules, often mixed with comedones, on the face and trunk.
A generalized, itchy eruption of small erythematous papules (an "id reaction") in response to a distant inflammatory stimulus.
Varicella infection starts as erythematous macules that rapidly progress to papules and then classic "dewdrop on a rose petal" vesicles.
A benign reactive proliferation of lymphocytes presenting as a solitary or grouped, reddish-brown to violaceous papules or plaques.
A morbilliform drug eruption is the most common type, presenting as a widespread, symmetric eruption of erythematous macules and papules.
Multiple, small, skin-colored to yellowish or reddish-brown papules on the chest and upper extremities, containing vellus hairs.
Crops of small, reddish-yellow papules with an erythematous halo that appear suddenly, often on extensor surfaces, due to hypertriglyceridemia.
A very common, benign rash in newborns consisting of erythematous macules, papules, and pustules, giving a "flea-bitten" appearance.
Inflammation of hair follicles, presenting as small, erythematous papules and pustules centered on a hair follicle.
A form of folliculitis caused by Pseudomonas aeruginosa from contaminated water, presenting as an itchy, papulopustular rash under the bathing suit area.
Presents as pruritic, erythematous papules, often grouped, sometimes with a central punctum or wheal.
Infiltration of the skin by leukemic cells, which can present as multiple, firm, violaceous or reddish-brown papules and nodules.
A chronic condition with recurrent crops of reddish-brown papules that may ulcerate and then spontaneously resolve, often leaving scars.
Also known as "prickly heat," this is caused by sweat duct obstruction in the epidermis, leading to discrete, itchy, erythematous papules.
Pityriasis lichenoides et varioliformis acuta presents with recurrent crops of small erythematous papules that develop hemorrhagic, vesicular, or necrotic centers and heal with varioliform scars.
An eruption of tiny erythematous papules and pustules clustered around the mouth, nose, and eyes, sparing the lip border.
A chronic, intensely itchy eruption of small, firm, skin-colored or erythematous papules on the extremities, trunk, and face in HIV patients.
Presents with inflammatory papules and pustules on a background of centrofacial erythema and telangiectasias, but lacks comedones.
Can present as crops of small, reddish-brown or violaceous papules, often on the face (especially around the eyes and nose).
A parasitic infestation causing an intensely pruritic eruption of small, excoriated erythematous papules, often with visible burrows.
An itchy, papular eruption under the bathing suit area caused by the stinging larvae of certain jellyfish or sea anemones.
Starts as a painful patch of erythema with papules that quickly evolve into vesicles in a dermatomal distribution.
A generalized, non-specific rash, often morbilliform (maculopapular), caused by a systemic viral infection.