Chickenpox to the fetus. Varicella infection in pregnant women could lead to spread via the placenta and infection of the fetus. If infection occurs during the first 28 weeks of gestation, this can lead to fetal varicella syndrome (also known as "congenital varicella syndrome"). Effects on the fetus can range in severity from underdeveloped toes and fingers to severe anal and bladder malformation. Possible problems include: Infection late in gestation or immediately following birth is referred to as ""neonatal varicella"". Maternal infection is associated with premature delivery. The risk of the baby developing the disease is greatest following exposure to infection
Motor neuron disease by the tenth International Statistical Classification of Diseases and Related Health Problems (ICD-10), which is the definition followed in this article. Motor neuron disease describes a collection of clinical disorders, characterized by progressive muscle weakness and the degeneration of the motor neuron on electrophysiological testing. As discussed above, the term "motor neuron disease" has varying meanings in different countries. Similarly, the literature inconsistently classifies which degenerative motor neuron disorders can be included under the umbrella term "motor neuron disease". The four main types of MND are marked (*) in the table below. All types of MND can be differentiated by