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Index of Diseases

Instructions. To find the proper medical term, scroll up and down to review the alphabetical listings. Also, you can use the "Page Up" and "Page down" key on your keyboard. Or use the search function of your browser. In both Netscape and Explorer, go to "Edit" and select "Find in Page". Type in the main term of interest. Frequently, it is best to type in only the first 4 or five letters (i.e., "prost" for prostate) because that will find more alternative terms from which to select the proper one.

U

Ulcer

Definition: A lesion on the surface of the skin or a mucous surface, produced by the sloughing of inflammatory necrotic tissue.
Annotation: coord IM with organ/dis precoord (IM) but note specific precoord ulcer terms; RODENT ULCER see CARCINOMA, BASAL CELL is available; stress ulcer: index under PEPTIC ULCER or specific (IM) + STRESS or STRESS, PSYCHOLOGICAL (IM)
ID#: D014456

Ulna Fractures

Definition: Fractures of the larger bone of the forearm.
Annotation:
ID#: D014458

Ulnar Nerve Compression Syndromes

Definition: Ulnar neuropathies caused by mechanical compression of the nerve at any location from its origin at the BRACHIAL PLEXUS to its terminations in the hand. Common sites of compression include the retroepicondylar groove, cubital tunnel at the elbow (CUBITAL TUNNEL SYNDROME), and Guyon's canal at the wrist. Clinical features depend on the site of injury, but may include weakness or paralysis of wrist flexion, finger flexion, and ulnar innervated intrinsic hand muscles, and impaired sensation over the ulnar aspect of the hand, fifth finger, and ulnar half of the ring finger. (Joynt, Clinical Neurology, 1995, Ch51, p43)
Annotation:
ID#: D017769

Ulnar Neuropathies

Definition: Disease involving the ULNAR NERVE from its origin in the BRACHIAL PLEXUS to its termination in the hand. Clinical manifestations may include PARESIS or PARALYSIS of wrist flexion, finger flexion, thumb adduction, finger abduction, and finger adduction. Sensation over the medial palm, fifth finger, and ulnar aspect of the ring finger may also be impaired. Common sites of injury include the AXILLA, cubital tunnel at the ELBOW, and Guyon's canal at the wrist. (From Joynt, Clinical Neurology, 1995, Ch51 pp43-5)
Annotation:
ID#: D020424

Unconsciousness

Definition: Loss of the ability to maintain awareness of self and environment combined with markedly reduced responsiveness to environmental stimuli. (From Adams et al., Principles of Neurology, 6th ed, pp344-5)
Annotation: do not confuse with UNCONSCIOUS (PSYCHOLOGY), unconscious behavior or "the unconscious" in psychol
ID#: D014474

Uniparental Disomy

Definition: The presence in a cell of two paired chromosomes from the same parent, with no chromosome of that pair from the other parent. This chromosome composition stems from non-disjunction (NONDISJUNCTION, GENETIC) events during MEIOSIS. The disomy may be composed of both homologous chromosomes from one parent (heterodisomy) or a duplicate of one chromosome (isodisomy).
Annotation:
ID#: D024182

Unverricht-Lundborg Syndrome

Definition: An autosomal recessive condition characterized by recurrent myoclonic and generalized seizures, ATAXIA, slowly progressive intellectual deterioration, dysarthria, and intention tremor. Myoclonic seizures are severe and continuous, and tend to be triggered by movement, stress, and sensory stimuli. The age of onset is between 8 and 13 years, and the condition is relatively frequent in the Baltic region, especially Finland. (From Menkes, Textbook of Child Neurology, 5th ed, pp109-110)
Annotation:
ID#: D020194

Upper Extremity Deformities, Congenital

Definition: Congenital structural abnormalities of the UPPER EXTREMITY.
Annotation:
ID#: D038062

Urachal Cyst

Definition: Cyst occurring in a persistent portion of the urachus, presenting as an extraperitoneal mass in the umbilical region. It is characterized by abdominal pain, and fever if infected. It may rupture, leading to peritonitis, or it may drain through the umbilicus.
Annotation: non-neoplastic; /blood supply /chem /secret /ultrastruct permitted; do not confuse with patent urachus (index under URACHUS /abnorm)
ID#: D014496

Ureaplasma Infections

Definition: Infections with bacteria of the genus UREAPLASMA.
Annotation: gram-neg bact infect; DF: UREAPLASMA INFECT
ID#: D016869

Uremia

Definition:
Annotation: azotemia in foreign lit means often UREMIA & often BLOOD UREA NITROGEN
ID#: D014511

Ureteral Calculi

Definition: Calculi of the ureter, usually the result of the passage of one originating in the kidney. It occurs usually in mid-life, rarely in children; and is more frequent in males than females. (From CMIT, 5th ed)
Annotation: chem composition of caclculi use /chem; /ultrastruct permitted
ID#: D014514

Ureteral Diseases

Definition:
Annotation: do not confuse with URETHRAL DISEASES, espec in Romance lang: urétéral (French), ureteral (Span), ureterale (Ital) = "ureteral", while urétral (French), uretral (Span), uretrale (Ital) = "urethral"
ID#: D014515

Ureteral Neoplasms

Definition: Cancer or tumors of the URETER. Hematuria, which occurs in 75% of patients with ureteral carcinoma, is the most common presenting symptom. The most common site for the occurrence of a ureteral tumor is in the lower third of the URETER, with a lesser incidence higher up.
Annotation: do not confuse with URETHRAL NEOPLASMS, espec in Romance lang: see note on "ureteral" & "urethral" under URETERAL DISEASES; coord IM with histol type of neopl (IM)
ID#: D014516

Ureteral Obstruction

Definition:
Annotation: do not confuse with URETHRAL OBSTRUCTION, espec in Romance lang: see note on "ureteral" & "urethral" under URETERAL DISEASES
ID#: D014517

Ureterocele

Definition: Cystic dilatation of the ureter with ballooning of the ureteral orifice into the lumen of the bladder.
Annotation: cystic dilat of ureter
ID#: D014518

Urethral Diseases

Definition:
Annotation: do not confuse with URETERAL DISEASES, espec in Romance lang: see note on "ureteral" & "urethral" under URETERAL DISEASES; inflamm dis = URETHRITIS
ID#: D014522

Urethral Neoplasms

Definition: Cancer or tumors of the URETHRA. This condition is relatively uncommon and is the only cancer of the urinary system that has a higher incidence rate in females than males. Squamous cell carcinoma is the most frequent histologic type.
Annotation: do not confuse with URETERAL NEOPLASMS, espec in Romance lang: see note on "ureteral" & "urethral" under URETERAL DISEASES; coord IM with histol type of neopl (IM)
ID#: D014523

Urethral Obstruction

Definition: Obstruction anywhere along the urethra.
Annotation: do not confuse with URETERAL OBSTRUCTION, espec in Romance lang: see note on "ureteral" & "urethral" under URETERAL DISEASES; URETHRAL STRICTURE is also available
ID#: D014524

Urethral Stricture

Definition:
Annotation: do not confuse with URETHRAL OBSTRUCTION
ID#: D014525

Urethritis

Definition: Inflammation of the urethra. (Dorland, 27th ed)
Annotation: inflamm of the urethra
ID#: D014526

Urinary Calculi

Definition: Calculi in any part of the urinary tract. According to their composition or pattern of chemical composition distribution, urinary calculi types may include alternating or combination, cystine, decubitus, encysted, fibrin, hemp seed, matrix, mulberry, oxalate, struvite, urostealith, and xanthic calculi.
Annotation: GEN or unspecified; consider BLADDER CALCULI; KIDNEY CALCULI; URETERAL CALCULI; chem composition of calculi: use /chem; /ultrastruct permitted
ID#: D014545

Urinary Fistula

Definition: An abnormal passage in any organ of the urinary tract or between urinary organs and other organs.
Annotation: GEN or unspecified; coord IM with pre-coord urinary organ/diseases (IM); fistula policy: Manual 23.19+; BLADDER FISTULA & VESICOVAGINAL FISTULA are available
ID#: D014548

Urinary Incontinence

Definition:
Annotation:
ID#: D014549

Urinary Incontinence, Stress

Definition: The involuntary discharge of urine as a result of anatomic displacement which exerts an opening pull on the bladder orifice. It often occurs during coughing or other forceful stresses. (From Dorland, 27th ed)
Annotation: stress refers to coughing, sneezing & other forces
ID#: D014550

Urinary Retention

Definition: Inability to urinate. The etiology of this disorder includes obstructive, neurogenic, pharmacologic, and psychogenic causes.
Annotation: do not confuse with ANURIA, total suppression of urine secretion by the kidneys
ID#: D016055

Urinary Tract Infections

Definition: Infections affecting those structures of the body which participate in the secretion and elimination of urine, i.e., the kidney, the ureters, the urinary bladder, and the urethra.
Annotation: infection in any organ of the urinary tract; GEN or unspecified; prefer specific organ/diseases coord with infection term; /drug ther: consider also ANTI-INFECTIVE AGENTS, URINARY
ID#: D014552

Urination Disorders

Definition: Disorders in the frequency of urination, the volume of urine produced or eliminated, or the ability to retain or void urine in normal fashion.
Annotation:
ID#: D014555

Urogenital Abnormalities

Definition: Congenital structural abnormalities of the urogenital system.
Annotation: for congen struct abnorm only; must be both uro + genital; GEN or unspecified; prefer specifics or specific parts of urogenital system /abnorm; do not use /congen & do not coord with INFANT, NEWBORN, DISEASES; DF: UROGENITAL ABNORM
ID#: D014564

Urogenital Diseases

Definition: Diseases of the urogenital tract.
Annotation: GEN or unspecified but must be both uro + genital.
ID#: D016146

Urogenital Neoplasms

Definition: Tumors or cancer of the urogenital tract.
Annotation: GEN or unspecified but must be both uro + genital: prefer specific precoord; coord IM with histol type of neopl (IM)
ID#: D014565

Urologic and Male Genital Diseases

Definition: A collective term for urinary tract diseases in male and female and diseases of the male genitalia.
Annotation: not used for indexing; DF:UROL MALE GENITAL DIS CATALOG: do not use
ID#: D014569

Urologic Diseases

Definition: Diseases of the urinary tract in both male and female. It does not include the male genitalia for which UROGENITAL DISEASES is used for general discussions of diseases of both the urinary tract and the genitalia.
Annotation: urinary tract dis only: do not confuse with UROGENITAL DISEASES which is uro + genital; GEN or unspecified: prefer specifics; /diag: consider also DIAGNOSTIC TECHNIQUES, UROLOGICAL; DF: UROL DIS
ID#: D014570

Urologic Neoplasms

Definition: Tumors or cancer of the URINARY TRACT in both male and female. It does not include the male genitalia for which UROGENITAL NEOPLASMS is used for general discussions of neoplasms of both the URINARY TRACT and the GENITALIA.
Annotation: neopl of urinary tract only: do not confuse with UROGENITAL NEOPLASMS which is uro + genital; GEN or unspecified: prefer specifics; coord IM with histol type of neopl (IM); DF: UROL NEOPL
ID#: D014571

Urological Manifestations

Definition: Clinical disturbances of the urinary system.
Annotation: not used in indexing
ID#: D020924

Urticaria

Definition: A vascular reaction of the skin characterized by erythema and wheal formation due to localized increase of vascular permeability. The causative mechanism may be allergy, infection, or stress.
Annotation: a form of immediate hypersensitivity; note X ref
ID#: D014581

Urticaria Pigmentosa

Definition: The most common form of cutaneous mastocytosis (MASTOCYTOSIS, CUTANEOUS) that occurs primarily in children. It is characterized by the multiple small reddish-brown pigmented pruritic macules and papules.
Annotation: X ref MACULOPAPULAR CUTANEOUS MASTOCYTOSIS: MASTOCYTOSIS, CUTANEOUS is also available
ID#: D014582

Uterine Diseases

Definition:
Annotation: inflamm dis = ENDOMETRITIS
ID#: D014591

Uterine Hemorrhage

Definition: Hemorrhage from vessels in the uterus, sometimes manifested as vaginal bleeding.
Annotation: "vaginal bleeding" usually refers to uterine bleeding through the vagina & goes here but check text for bleeding from vaginal inj, vaginal dis, vaginal tumors, etc (index under proper VAGINA term)
ID#: D014592

Uterine Inertia

Definition: Failure of the uterus to contract with normal strength and duration and at normal intervals during labor. It is also called uterine atony.
Annotation: failure of uterus to contract during labor; includes "atony"; check tags FEMALE and PREGNANCY
ID#: D014593

Uterine Inversion

Definition: A turning of the uterus inside out, whereby the fundus is forced through the cervix and protrudes into or outside of the vagina. (Dorland, 28th ed)
Annotation: do not confuse with UTERINE PROLAPSE
ID#: D019687

Uterine Neoplasms

Definition: Tumors or cancer of the UTERUS.
Annotation: fibroma = LEIOMYOMA (IM) + UTERINE NEOPLASMS (IM); coord IM with histol type of neopl (IM); CERVIX NEOPLASMS & ENDOMETRIAL NEOPLASMS are available
ID#: D014594

Uterine Perforation

Definition: Penetration through the uterine wall.
Annotation:
ID#: D014595

Uterine Prolapse

Definition: Downward displacement of the uterus. It is classified in various degrees: in the first degree the cervix is within the vaginal orifice; in the second degree the cervix is outside the orifice; in the third degree the entire uterus is outside the orifice.
Annotation: downward displacement of uterus; do not confuse with UTERINE INVERSION
ID#: D014596

Uterine Rupture

Definition: A tearing of uterine tissue; it may be traumatic or spontaneous due to multiple pregnancy, large fetus, previous scarring, or obstruction.
Annotation: spontaneous or traumatic but do not coord with RUPTURE or RUPTURE, SPONTANEOUS
ID#: D014597

Uveal Diseases

Definition: Diseases of the uvea.
Annotation: inflamm dis = UVEITIS & specifics
ID#: D014603

Uveal Neoplasms

Definition: Tumors or cancer of the UVEA.
Annotation: /blood supply /chem /second /secret /ultrastruct permitted; coord IM with histol type of neopl (IM); CHOROID NEOPLASMS & IRIS NEOPLASMS are also available
ID#: D014604

Uveitis

Definition: Inflammation of part or all of the uvea, the middle (vascular) tunic of the eye, and commonly involving the other tunics (sclera and cornea, and the retina). (Dorland, 27th ed)
Annotation: inflamm of uvea; GEN: prefer specifics
ID#: D014605

Uveitis, Anterior

Definition: Inflammation of the anterior uvea comprising the iris, angle structures, and the ciliary body. Manifestations of this disorder include ciliary injection, exudation into the anterior chamber, iris changes, and adhesions between the iris and lens (posterior synechiae). Intraocular pressure may be increased or reduced.
Annotation: inflammation of both the iris & ciliary body; of iris alone = IRITIS, of ciliary body alone = CILIARY BODY (IM) + UVEITIS, ANTERIOR (IM)
ID#: D014606

Uveitis, Intermediate

Definition: Inflammation of the pars plana, ciliary body, and adjacent structures.
Annotation: inflammation of pars plana, ciliary body & adjacent structures; of pars plana alone = PARS PLANITIS; of ciliary body alone = CILIARY BODY (IM) + UVEITIS, ANTERIOR (IM)
ID#: D015867

Uveitis, Posterior

Definition: Inflammation of the choroid as well as the retina and vitreous body. Some form of visual disturbance is usually present. The most important characteristics of posterior uveitis are vitreous opacities, choroiditis, and chorioretinitis.
Annotation: inflammation of the choroid, retina & vitreous body; of choroid alone = CHOROIDITIS; of choroid + retina = CHORIORETINITIS; of vitreous body alone = VITREOUS BODY (IM) + EYE DISEASES (NIM)
ID#: D015866

Uveitis, Suppurative

Definition: Intraocular infection caused mainly by pus-producing bacteria and rarely by fungi. The infection may be caused by an injury or surgical wound (exogenous) or by endogenous septic emboli in such diseases as bacterial endocarditis or meningococcemia.
Annotation: coord IM with specific bacterial or fungal infect (IM)
ID#: D015829

Uveomeningoencephalitic Syndrome

Definition: A syndrome characterized by bilateral granulomatous UVEITIS with IRITIS and secondary GLAUCOMA, premature ALOPECIA, symmetrical VITILIGO, poliosis circumscripta (a strand of depigmented hair), HEARING DISORDERS, and meningeal signs (neck stiffness and headache). Examination of the cerebrospinal fluid reveals a pattern consistent with MENINGITIS, ASEPTIC. (Adams et al., Principles of Neurology, 6th ed, p748; Surv Ophthalmol 1995 Jan;39(4):265-292)
Annotation: DF: UVEOMENINGOENCEPH SYNDROME
ID#: D014607

Uveoparotid Fever

Definition: A manifestation of sarcoidosis marked by chronic inflammation of the parotid gland and the uvea.
Annotation:
ID#: D014608