The symptoms of TSC are different for each individual, because they vary based on the severity of the condition and which areas of the body are affected. One of the most commonly affected organs are the kidneys, with symptoms such as cysts and angiomylipomas, which are fatty tissue and muscle cell lesions. Tumors may be present in the brain and heart, especially in children. Tumors may also be found in the eyes, lungs, pancreas and liver.
The brain tumors can be partially responsible for learning disabilities, mental retardation and behavior problems. They can also lead to a problem with epilepsy. The tumors common to TSC patients, although benign, can also lead to epilepsy, attention defecit disorder and, in some cases, autism. It is estimated by National Institure of Neurological Disorders and Stroke that as many as two-thirds of individuals with this condition have a learning disability or other neurologically-based disorder.
Another common symptom of TSC is skin abnormalities. Although these do not cause any serious medical problems, and are often just an annoyance, they are very useful in diagnosing the condition. Some skin abnormalities may cause disfigurement and be serious enough to warrant treatment.