Diagnosis: Tuberous sclerosis complex (Bourneville disease)
A 14-year-old male presents with a 2-year history of centrofacial pink papules and multiple hypopigmented macules, accompanied by episodes of seizures. Examination reveals characteristic skin findings associated with a systemic condition, highlighting the importance of recognizing cutaneous manifestations in the context of neurological symptoms.
A 14-year-old male was referred for evaluation of multiple pink papules on the face and hypopigmented macules on the trunk, present for 2 years. He also experiences recurrent seizures beginning at age 12. On examination, there are numerous pink papules on the nose and cheeks, along with hypopigmented macules scattered across the trunk and extremities.Numerous pink papules on the centrofacial region, particularly the nose and cheeks.Hypopigmented macules on the trunk and extremities, measuring 1-3 cm.Possible additional findings: Subungual fibromas or shagreen patches may be present.Neurological examination shows no focal deficits, but a history of seizures is noted.
The patient’s symptoms began at age 12 with the onset of seizures, which occur approximately twice a month. Initially, he was treated with levetiracetam with partial control of seizures. The skin lesions developed gradually, with no known triggers. Family history is significant for a maternal uncle with similar skin findings and epilepsy. No known exposure to toxic agents. He is otherwise healthy, with no prior surgeries or significant medical history.Seizure onset at age 12, with episodes occurring bi-monthly.Initial treatment included levetiracetam, with limited control of seizures.Family history includes maternal uncle with similar skin and neurological symptoms.No known environmental exposures or significant medical history.Gradual development of skin lesions over the past 2 years.
Acute / First-Line ManagementFor seizures, adjust levetiracetam dosage or consider alternative therapies such as lamotrigine or valproic acid based on patient tolerance and response.Workup and Diagnostic ConfirmationSkin biopsy may be performed to confirm the diagnosis, demonstrating characteristic histological features.Neuroimaging (MRI) to assess for associated brain lesions, such as cortical tubers or subependymal nodules.Genetic testing for TSC1 or TSC2 mutations may be considered for definitive diagnosis.Long-Term ManagementRegular follow-up with a multidisciplinary team, including dermatology and neurology.Consideration for mTOR inhibitors (e.g., everolimus) if there are significant cutaneous or neurological manifestations requiring intervention.Patient education regarding seizure management and recognition of potential complications.
Nevoid basal cell carcinoma syndrome: Characterized by basal cell carcinomas, jaw cysts, and skeletal abnormalities without the systemic involvement seen in this case.Sturge-Weber syndrome: Presents with facial capillary malformations and neurological symptoms, but lacks the specific skin findings of hypopigmented macules.Neurofibromatosis type 1: Features café-au-lait macules and neurofibromas; however, it does not typically present with facial papules or seizures as a primary concern.Ataxia-telangiectasia: Associated with telangiectasias and immunodeficiency; however, it lacks the characteristic skin tumors or hypopigmented macules.Acne vulgaris: Can present with facial papules but does not explain the hypopigmented macules or seizures.Essential thrombocythemia: Rarely presents with skin findings but is primarily a hematological disorder without the relevant cutaneous manifestations.Basal cell carcinoma: Unlikely in this age group without a history of significant sun exposure; does not fit the overall clinical picture.
High-Yield PearlsClinical features: Recognizing the classic cutaneous manifestations—pink papules and hypopigmented macules—can guide diagnosis.Multisystem involvement: Be aware that tuberous sclerosis complex affects multiple organ systems, necessitating a comprehensive evaluation.Genetic testing: Consider genetic testing for TSC1 and TSC2 mutations in cases with suggestive clinical features, especially with family history.Seizure management: Tailor seizure management strategies based on individual response and consider mTOR inhibitors for severe manifestations.Long-term follow-up: Regular surveillance for potential complications, including renal and pulmonary issues, is crucial in these patients.Recognizing the interplay between dermatological signs and neurological symptoms is key in diagnosing genetic syndromes like tuberous sclerosis complex.
Tags: tuberous sclerosis, Bourneville, genodermatoses