Infants with Tay-Sachs disease appear to develop normally for the first few months of life. Then, as nerve cells become distended with fatty material, a relentless deterioration of mental and physical abilities occurs. The child becomes blind, deaf, and unable to swallow. Muscles begin to atrophy and paralysis sets in.nfants with Tay-Sachs disease appear to develop normally for the first few months of life. Then, as nerve cells become distended with fatty material, a relentless deterioration of mental and physical abilities occurs. The child becomes blind, deaf, and unable to swallow. Muscles begin to atrophy and paralysis sets in.
The following medical conditions are some of the possible causes of Behind knee pain. There are likely to be other possible causes, so ask your doctor about your symptoms. 1  Diabetes. 2  Patellofemoral syndrome. 3  Patellar Subluxation dislocation. 4  Articular cartilage injury. 5  Bakers cyst. 6  Meniscal disorders.
What Causes Pain Behind the Knee? Why Does it Hurt in the Back of my Knee or Knee Cap? Back of knee pain, also known as posterior knee pain, can come in varied forms ranging from slight to sharp pain behind knee to pain in the back of knee when bending to back of knee pain after sitting.