One person, two bilateral symmetrical giant Becker nevi

Area of Science:

• Dermatology
• Medical Case Reports

Background:

• Becker nevus is a focal epidermal hypermelanotic disorder.
• Typically presents as unilateral hyperpigmentation on the upper trunk and proximal extremities, often with hypertrichosis.
• Bilateral or multiple Becker nevi are uncommon in medical literature.

Observation:

• A young male patient presented with two distinct Becker nevi.
• These nevi were bilateral and symmetrical in presentation.
• One giant Becker nevus extended from the trunk to both arms; the second was located on the abdomen.

Findings:

• The patient exhibited bilateral symmetrical giant Becker nevi, a rare occurrence.
• The distribution involved the trunk, arms, and abdomen, exceeding typical unilateral patterns.
• This case underscores the potential for extensive and symmetrical presentations of Becker nevus.

Implications:

• This case expands the known spectrum of Becker nevus clinical presentations.
• Highlights the importance of considering rare variants in diagnosing hyperpigmentation disorders.
• Contributes to the understanding of the developmental patterns of Becker nevus.