Frontal bossing

Skull bossing is a descriptive term in medical physical examination indicating a protuberance of the skull, most often in the frontal bones of the forehead ("frontal bossing"). Although prominence of the skull bones may be normal, skull bossing may be associated with certain medical conditions, including nutritional, metabolic, hormonal, and hematologic disorders. [Source: Wikipedia ]

Synonyms
Prominent central forehead
May Be Caused by
 Common
Achondroplasia
Anemia
Healed rickets
Sickle cell disease
Thalassemia
 Uncommon
3-M syndrome
Achondrogenesis
Acrocallosal syndrome
Antley-Bixler-like syndrome
Apert syndrome
Camurati-Engelmann disease
Chromosome syndrome
Chronic subdural hematoma
Cleidocranial dysostosis
Coffin-Lowry syndrome
Cole-Carpenter syndrome
Craniodiaphyseal dysplasia
Craniofrontonasal dysplasia
Craniometaphyseal dysplasia
Craniotelencephalic dysplasia
Diaphyseal dysplasia
Diastrophic dysplasia
Frontometaphyseal dysplasia
Fucosidosis
GAPO syndrome
GM1 gangliosidosis
Gorlin syndrome
Greig cephalopolysyndactyly syndrome
Hallermann-Streiff syndrome
Holt-Oram-like syndrome
Hurler syndrome
Hydrocephalus
Hypochondroplasia
IMAGe association
Infantile multisystem inflammatory disease
Iron deficiency anemia
Larsen syndrome
Lissencephaly syndrome
Lowe syndrome
Macrocephaly
Marshall-Smith syndrome
Meckel syndrome
Mercedes Benz syndrome
Metatropic dysplasia
Miller-Dieker syndrome
Mucolipidosis type 2
Mucopolysaccharidosis
Mucopolysaccharidosis type 6
Oculo-auriculo-vertebral spectrum
Orofaciodigital syndrome type 1
Osteoglophonic dysplasia
Osteopathia striata with cranial sclerosis
Osteopetrosis
Otofacial syndrome
Otopalatodigital syndrome
Otopalatodigital syndrome type 1
Parietal foramina-clavicular hypoplasia dysplasia
Progeria
Pyknodysostosis
Pyle dysplasia
Robinow syndrome
Schinzel-Giedion syndrome
Schwarz-Lélek syndrome
Sclerosteosis
Severe osteopetrosis
Silver-Russell syndrome
Sotos syndrome
Teebi hypertelorism syndrome
Temtamy syndrome
Thanatophoric dysplasia
Trisomy 8