Microcephaly (from New Latin microcephalia, from Ancient Greek μικρός mikrós "small" and κεφαλή kephalé "head") is a medical condition involving a shorter-than-normal head. Microcephaly may be present at birth or it may develop in the first few years of life. [Source: Wikipedia ]

May Cause
Abnormal contour of calvarium
Dense or thick skull
Diffusely dense calvarium
Fetal cranial deformity
Premature craniosynostosis
Small sella turcica
Thick skull
May Be Caused by
Cerebral atrophy
Congenital transplacental infection
Perinatal brain hypoxia
Total craniosynostosis
Achalasia - microcephaly
Agammaglobulinemia - microcephaly - craniosynostosis - severe dermatitis
Aicardi-Goutiéres syndrome
Aminopterin fetopathy
Angelman syndrome
Anonychia - microcephaly
Aphalangy - syndactyly - microcephaly
Atelencephalic microcephaly
Autosomal dominant microcephaly
Autosomal recessive congenital intrauterine infection-like syndrome
Balci syndrome
Baraitser-Reardon syndrome
Bartsocas-Papas syndrome
Beckwith-Wiedemann syndrome
Börjeson-Forssman-Lehmann syndrome
Brachmann-de Lange syndrome
Brachymorphism-onychodysplasia-dysphalangism syndrome
CAMAK syndrome
CAMFAK syndrome
Carbonic anhydrase II deficiency
Cephaloskeletal dysplasia
Cerebellar hypoplasia with endosteal sclerosis
Cerebro-oculo-facio-skeletal syndrome
Chondrodysplasia punctata rhizomelic type
Christian syndrome
Chromosome 18:del(18q) syndrome
Chromosome 4p- syndrome
Chromosome 5:del(5p) syndrome
Chromosome 7:del(7q) syndrome
Chromosome 9:dup (9p) syndrome
Cockayne syndrome
Coffin-Siris syndrome
Cohen syndrome
Congenital osteogenesis imperfecta - microcephaly - cataracts
Cutis verticis gyrata
Da Silva syndrome
De Sanctis-Cacchione syndrome
Deprivation dwarfism
Distal arthrogryposis type 2A
Dobrow syndrome
Dubowitz syndrome
Dyggve-Melchior-Clausen dysplasia
Epilepsy - microcephaly - skeletal dysplasia
Extrasystoles - short stature - hyperpigmentation - microcephaly
Familial microcephaly
Familial microencephaly
Fanconi anemia
Feingold syndrome
Fetal alcohol syndrome
Fetal brain disruption sequence
Fetal cytomegalovirus infection
Fetal herpes simplex infection
Fetal hydantoin syndrome
Fetal rubella infection
Fetal toxoplasmosis infection
Fetal trimethadione syndrome
Filippi syndrome
Fraser syndrome
Galloway-Mowat syndrome
Goldberg-Shprintzen syndrome
Goltz syndrome
GOMBO syndrome
Hoyeraal-Hreidarsson syndrome
Hunter syndrome
Hurst syndrome
Hypotonia - failure to thrive - microcephaly
Incontinentia pigmenti
Intellectual deficit - microcephaly - phalangeal - facial abnormalities
Ives-Houston syndrome
Johanson-Blizzard syndrome
Juberg-Hayward syndrome
Kabuki syndrome
Kaufman oculocerebrofacial syndrome
Kearns-Sayre syndrome
Kenny-Caffey syndrome
Krabbe disease
Lambotte syndrome
Leber congenital amaurosis
Lenz microphthalmia syndrome
Lesch-Nyhan syndrome
Lethal osteosclerotic skeletal dysplasia
Lissencephaly syndrome
Lowry-Wood syndrome
Marden-Walker syndrome
Marinesco-Sjögren syndrome
Martsolf syndrome
Maternal phenylketonuria
MCA syndrome
Meckel syndrome
Menkes disease
MICRO syndrome
Microcephalic osteodysplastic dysplasia
Microcephaly - albinism - digital anomalies
Microcephaly - brachydactyly - kyphoscoliosis
Microcephaly - brain defect - spasticity - hypernatremia
Microcephaly - cardiac defect - lung malsegmentation
Microcephaly - cardiomyopathy
Microcephaly - cerebellar hypoplasia - cardiac conduction defect syndrome
Microcephaly - cervical spine fusion anomalies
Microcephaly - cleft palate
Microcephaly - cutis verticis gyrata - lymphedema
Microcephaly - deafness - intellectual deficit
Microcephaly - digital anomalies - intellectual deficit
Microcephaly - facio-cardio-skeletal syndrome Hadziselimovic type
Microcephaly - glomerulonephritis - marfanoid habitus
Microcephaly - intellectual deficit - phalangeal and neurological anomalies
Microcephaly - lymphedema - chorioretinopathy
Microcephaly - microphthalmia - cataract - intracranial calcification
Microcephaly - polymicrogyria - corpus callosum agenesis
Microcephaly - rhizomelia - cataracts - micropenis
Microcephaly - seizures - developmental delay
Microcephaly - seizures - intellectual deficit - heart disease
Microcephaly-facial clefting-polydactyly syndrome
Microcephaly-lymphedema syndrome
Microcephaly-rib gap syndrome
Mowat-Wilson syndrome
Multiple epiphyseal dysplasia
Mulvihill-Smith syndrome
Mutchinick syndrome
Myotonic dystrophy
Neu-Laxova syndrome
Nijmegen breakage syndrome
Noonan syndrome
Oculo-auriculo-vertebral spectrum
Oculopalatocerebral syndrome
Opitz trigonocephaly syndrome
Oto-facial syndrome plus
Otofacial syndrome
PEHO syndrome
Prader-Willi syndrome
Prenatal radiation
Prominent glabella - microcephaly - hypogenitalism
Propionic acidemia
Pyruvate dehydrogenase complex deficiency
Renpenning syndrome
Riley-Day syndrome
Rubinstein-Taybi syndrome
Say syndrome
Say-Barber syndrome
Seckel syndrome
Severe feeding difficulties - failure to thrive - microcephaly due to ASXL3 deficiency
Short stature - microcephaly - heart defect
Smith-Lemli-Opitz syndrome
Smith-Magenis syndrome
Spondyloepiphyseal dysplasia
Stoll-Charrow-Poznanski syndrome
Synostosis - microcephaly - scoliosis
Toluene embryopathy
Trichorhinophalangeal dysplasia type 2
Trichorhinophalangeal dysplasia type 3
Trisomy 13
Trisomy 18
Trisomy 21
Trisomy 22
Trisomy 9
Tsukahara syndrome
Tuberous sclerosis
Vici syndrome
Wiedemann syndrome
Wrinkly skin syndrome
XXXXX syndrome