Tuberous Sclerosis Complex (TSC)

Tuberous sclerosis complex (TSC) is a genetic disorder that affects multiple systems. It results from mutations in the genes TSC1 and TSC2 and is known for causing neurological disorders including epilepsy and intellectual disability. TSC is usually diagnosed in childhood or infancy, and the affected individuals may present with developmental delay, skin manifestations, or seizures.

Hamartomas may grow in the brain, skin, heart, kidney, liver, and lungs, affecting the function of these organs. Tuberous sclerosis affects multiple systems and may manifest in various tissues within a lifetime. Renal manifestations are common in patients with tuberous sclerosis complex.

Tuberous sclerosis complex affects approximately 1 in 6000 to 1 in 10,000 live births, with an overall prevalence of 1 in 20,000.

Currently there is no cure for TSC, but treatment is available for a number of symptoms. Treatment is symptomatic and supportive, such as early developmental interventions to reduce the risk of developmental delays.

 

Sign and Symptoms

Tuberous sclerosis is a highly variable disorder. The signs, symptoms, and severity of the disorder can vary dramatically from one person to another.

More than 80% of individuals with tuberous sclerosis develop seizures during childhood. Many initially manifest infantile spasms during infancy, which are characterized by a sudden jerk with flexion at the waist and raising of the arms.