Differential Diagnosis for Pimple-like Growth on the Base of Penile Shaft
Single Most Likely Diagnosis
- Pearly Penile Papule: These are small, benign growths that appear as pimple-like bumps on the base of the penile shaft. They are not typically associated with pus, erythema, edema, discharge, or tenderness, which aligns with the symptoms described.
Other Likely Diagnoses
- Fordyce Spots: These are small, yellowish or white bumps on the penis that are caused by the visibility of sebaceous glands. They are usually harmless and do not cause any symptoms such as pus, erythema, or tenderness.
- Sebaceous Hyperplasia: This condition involves an overgrowth of sebaceous glands, leading to small, pimple-like bumps. It is generally benign and asymptomatic, aside from the cosmetic appearance.
Do Not Miss Diagnoses
- Squamous Cell Carcinoma: Although less likely, it's crucial to consider malignant conditions. Squamous cell carcinoma of the penis can present in various ways, including as a pimple-like growth. Early detection is key for effective treatment.
- Genital Warts (Condyloma Acuminata): Caused by the human papillomavirus (HPV), these can appear as small, pimple-like growths on the penis. They are usually not tender but can be associated with other symptoms like itching or bleeding.
Rare Diagnoses
- Molluscum Contagiosum: A viral infection that causes small, pearly, or flesh-colored bumps. The bumps can appear anywhere on the body, including the genital area, and are usually not associated with other symptoms like pus or erythema.
- Lichen Nitidus: A rare skin condition characterized by tiny, shiny, flat-topped bumps that can appear on the penis. It is generally asymptomatic but can be confused with other conditions due to its appearance.