Dysmelia (from the Greek dys (δυσ-), "bad" + mélos (μέλος), "limb" + English suffix -ia) is a congenital disorder of a limb resulting from a disturbance in embryonic development. Types
Dysmelia can refer to
missing (aplasia) limbs: amelia, oligodactyly, congenital amputation e.g. tibial or radial aplasia
malformation of limbs: shortening (micromelia, rhizomelia or mesomelia), ectrodactyly, phocomelia, meromelia, syndactyly, brachydactyly, club foot
too many limbs: polymelia, polydactyly, polysyndactyly
others: tetraamelia, hemimelia, symbrachydactyly

Occurrence rate
Birth defects involving limbs occur in 1 per 1000. Causes
Dysmelia can be caused by
Inheritance of abnormal genes, e.g. polydactyly, ectrodactyly or brachydactyly, symptoms of deformed limbs then often occur in combination with other symptoms (syndromes)
external causes during pregnancy (thus not inherited), e.g. via amniotic band syndrome
teratogenic drugs (e.g. thalidomide, which causes phocomelia) or environmental chemicals
ionizing radiation (nuclear weapons, radioiodine, radiation therapy)
infections
metabolic imbalance

Syndromes with dysmelia
References
External links
DysNet: An organisation for people affected by Dysmelia (congenital limb difference)
Reach: Association for Children with Upper Limb Deficiency)
Disorganized schizophrenia, or hebephrenia, was a subtype of schizophrenia prior to 2013. Subtypes of schizophrenia were no longer recognized as separate conditions in the DSM 5, published in 2013. The disorder is no longer listed in the 11th revision of the International Classification of Diseases (ICD-11). Disorganized schizophrenia was classified within ICD-10 the existing classification, in practice, until January 1,  2022, as a mental and behavioural disorder,  because the classification was thought to be an extreme expression of the disorganization syndrome that has been hypothesized to be one aspect of a three-factor model of symptoms in schizophrenia, the other factors being reality distortion (involving delusions and hallucinations) and psychomotor poverty (lack of speech, lack of spontaneous movement and various aspects of blunting of emotion). Presentation
The condition is also known as hebephrenia, named after the Greek term for "adolescence" – ἥβη (hḗbē) – and possibly the ancient-Greek goddess of youth, Hebe, daughter of Hera. The term refers to the ostensibly more prominent appearance of the disorder in persons around puberty.The prominent characteristics of this form are disorganized behavior and speech (see formal thought disorder), including loosened associations and schizophasia ("word salad"), and flat or inappropriate affect. In addition, psychiatrists must rule out any possible sign of catatonic schizophrenia. The most prominent features of disorganized schizophrenia are not delusions and hallucinations, as in paranoid schizophrenia, although fragmentary delusions (unsystemized and often hypochondriacal) and hallucinations may be present.