Among the range of symptoms that characterize it are developmental disability, physical abnormalities of the pinky toes and fingers, as well as a distinctive, “coarse” facial features, among others. [verywellhealth.com]

disability"[6] short fifth digits with hypoplastic or absent nails low birth weight feeding difficulties upon birth frequent respiratory infections during infancy hypotonia joint laxity delayed bone age microcephaly coarse facial features, including [en.wikipedia.org]

Although there are many variable signs and symptoms, hallmarks of this condition include developmental disability, abnormalities of the fifth (pinky) fingers or toes, and characteristic facial features. [ghr.nlm.nih.gov]

Sucking/feeding difficulties, poor growth, ophthalmologic abnormalities, hearing impairment, and spinal anomalies are common findings. Both autosomal dominant and autosomal recessive inheritance patterns have been reported. [malacards.org]

Subsequently, hearing impairment was found in 33%, while visual impairment was found in 75% of individuals with the ARID1A gene variation. [scitcentral.com]

Type B individuals are identified as having thin eyebrows and a thin vermillion of the upper lip [10]. [scitcentral.com]

Physically, all individuals in a sample of 12 displayed hypertrichosis, thick eyebrows, long eyelashes, ptosis, thick lower lip vermillion, pointed chin (noted in older ages) and hypoplastic fifth digits. Occasionally, a cleft palate occurred. [scitcentral.com]

Parent raters did not endorse any emotional or behavioral challenges; yet social communication difficulties, stereotyped behaviors, self-stimulatory behaviors, restricted interests, play rituals and inappropriate use of objects were reported. [scitcentral.com]

span and obsessionality also occurred in 6%. [scitcentral.com]

Of the produced literature, it has been suggested children diagnosed with CSS display global developmental delays, language delays, gross- and fine-motor dysfunction, social-emotional challenges, behavioral difficulties and adaptive functioning [6-10,17 [scitcentral.com]

For example, Mari et al. [7] suggested individuals with CSS may display aggressiveness, hyperactivity, psychosis and traits of ASD. [scitcentral.com]