dys-

(Greek: bad, harsh, wrong; ill; hard to do, difficult at; slow of; disordered; impaired, defective)

polydystrophic
polydystrophy
A condition characterized by the presence of many congenital anomalies of the connective tissues.
pseudodysentery
An occurrence of symptoms indistinguishable from those of bacillary dysentery, resulting frokm causes other than the presence of the specific microorganisms of bacillary dysentery.
psychodysleptic
Inducing a dreamlike or delusional mental state; hallucinatory.
pyknodysostosis, pycnodysostosis
1. An inheritable disorder of bone, characterized by a short stature, a large skull with absence of knitting of the anterior frontanel, receding chin, shortness of fingers, and toes, and fragility of bones.

Radiographs show an abnormal thickness of bones, which is responsible for the fractures.

2. An autosomal recessive disease that affects bones and resembles osteopetrosis, but the disease is considered to be mild and not associated with hematological or neurological abnormalities.

The only treatment is surgical correction of deformities and fractures.

stomatodysodia
Bad breath, some causes include smoking, poor dental hygiene, alcoholism, throat infection, dental infection, sinusitis, lung infection, gum disease, impacted tooth or teeth, and a foreign body in the nose (children).
tachydysrhythmia
An abnormal heart rhythm with a rate greater than 100 beats per minute in an adult; the term tachyarrhythmia is usually used instead.
trichodystrophy
1. Impaired nutrition of hair, which can lead to baldness.
2. Defective nutrition of hair, often culminating in alopecia. May be acquired or congenital; the latter often with metabolic or other birth defects.
trichopoliodystrophy
Congenital defect of copper metabolism manifested in short, sparse, poorly pigmented kinky hair.

This condition is associated with failure to thrive in life, physical and mental retardation, and progressive severe deterioration of the brain; apparently a defect of copper transport.

trichothiodystrophy
1. An abnormality of the hair shaft in which the fine, brittle hairs show alternating light and dark zones when viewed under a polarizing microscope.

The sulfur content of the hair is greatly reduced and mental retardation has frequently been a related feature.

2. Congenital fragile hair with multiple fractures resulting from low sulfur-containing amino acid, cysteine, content of the hair, mental impairment, and short stature.

Inter-related cross references, directly or indirectly, involving word units meaning "bad, wrong": caco-, kako-; mal-; mis-; pessim-; sceler-.

Cross references directly, or indirectly, involving "slow, slowness, slow of, sluggish": lent-; tard-.