 |  Symptoms ->  hearing loss, lazy eye, flaccid muscles, mouth breathing, congenital heart disease, thickening of the skin of the palms and soles, displacement of the tongue, learning disability, obesity, vision disorder, brachycephaly, speech delay in a child, excess skin on the back of the neck, delayed development, short stature, bent little finger, seborrheic dermatitis, spots in eyes, single line on palm, difficulty thinking and understanding, polycythemia, low-set ears, thyroid disease, obstructive sleep apnea, atlantoaxial instability, immune deficiency, upslanting palpebral fissures  |  Disease ->  Down syndrome