Bruising
Mongolian spots (congenital dermal melanosis)
Bleeding disorders
Hemangiomas
Phytophotodermatitis
Malignancy
Connective tissue disease
Cultural healing practices (eg, coining and cupping)
Osteogenesis imperfecta
Vasculitis (Henoch-Schönlein purpura)
Ink stains (e.g. caused by new clothing)
Burns
Hypersensitivity reaction
Friction blisters
Impetigo (may be confused with cigarette burns)
Phytophotodermatitis
Dermatitis herpetiformis
Accidental laxative ingestion
Healing practices (eg, coining, cupping, and moxibustion)
Fractures
Rickets
Congenital syphilis (can cause periosteal elevation)
Birth trauma
CPR (rarely causes rib fractures and very rarely causes posterior rib fractures)
Osteogenesis imperfecta
Caffey disease
Osteomyelitis
Subdural hematoma
Bleeding disorders
Vascular malformations
Glutaric aciduria type 153
Benign extra-axial fluid
Menkes disease
Retinal hemorrhage
Vasculitis
Vascular obstruction
Vaginal delivery (generally disappear by 4 weeks of age)
CPR (retinal hemorrhages are rare after chest compressions and, if present, are usually in the presence of other risk factors for hemorrhage)
Mongolian spots (congenital dermal melanosis)
Bleeding disorders
Hemangiomas
Phytophotodermatitis
Malignancy
Connective tissue disease
Cultural healing practices (eg, coining and cupping)
Osteogenesis imperfecta
Vasculitis (Henoch-Schönlein purpura)
Ink stains (e.g. caused by new clothing)
Hypersensitivity reaction
Friction blisters
Impetigo (may be confused with cigarette burns)
Phytophotodermatitis
Dermatitis herpetiformis
Accidental laxative ingestion
Healing practices (eg, coining, cupping, and moxibustion)
Rickets
Congenital syphilis (can cause periosteal elevation)
Birth trauma
CPR (rarely causes rib fractures and very rarely causes posterior rib fractures)
Osteogenesis imperfecta
Caffey disease
Osteomyelitis
Bleeding disorders
Vascular malformations
Glutaric aciduria type 153
Benign extra-axial fluid
Menkes disease
Vasculitis
Vascular obstruction
Vaginal delivery (generally disappear by 4 weeks of age)
CPR (retinal hemorrhages are rare after chest compressions and, if present, are usually in the presence of other risk factors for hemorrhage)
Abusive head trauma
Bruising
Traumatic asphyxia
Mongolian spots 
Accidental hypothermia
Bleeding disorders
Head trauma 
Hemangiomas