Names of inflammatory diseases

Basic principle of term formation

In clinical terminology, there is a strict standard for denoting inflammatory processes. To construct a correct Latin term, one must take the stem of the Greek name of the affected organ or tissue and attach the derivational suffix -itis to it.

In the nominative singular (Nominativus), such words always end in -itis. In the genitive case (Genitivus), they acquire the characteristic ending -itĭdis. It is important to remember that grammatically, all such terms are feminine nouns.

Let us examine this principle with simple examples. If we are speaking of a joint (Greek root arthr-), joint inflammation is called arthritis (genitive — arthritĭdis). Pathologies of the spleen are constructed similarly — splenitis (splenitĭdis), or the spine — spondylitis (spondylitĭdis). This universal algorithm allows physicians to easily decipher diagnoses.

Inflammations of the digestive system and peritoneum

The largest group of terms describes pathologies of the gastrointestinal tract and associated digestive glands. The inflammatory process can be localized in any part of the digestive tube:

• Oral cavity and tongue: inflammation of the oral mucosa is designated as stomatitis, and inflammation of the tongue as glossitis.
• Stomach: the well-known inflammation of the gastric mucosa is translated as gastritis.
• Intestines: involvement of the ileum is called ileitis, of the sigmoid colon — sigmoiditis, and inflammation of the rectum — proctitis.
• Digestive glands and ducts: inflammation of the pancreatic tissue is pancreatitis. Pathologies of the biliary system include inflammation of the gallbladder — cholecystitis and inflammation of the bile ducts — cholangitis.
• Peritoneum: severe inflammation of the serous membrane of the abdominal cavity is called peritonitis.

Genitourinary pathologies

The terminology of inflammations of the excretory and reproductive organs also strictly obeys the general rule of suffixal formation. When studying this group, it is important to clearly distinguish the levels of urinary tract involvement.

• Kidneys and urinary tract: inflammation of the kidney tissue itself is nephritis, while inflammation of the renal pelvis is distinguished by a separate term, pyelitis. Moving down the anatomical tract, we encounter inflammation of the ureter — ureteritis. Inflammation of the urinary bladder is designated as cystitis, and inflammation of the urethra as urethritis.
• Reproductive system: the inflammatory process in the uterus is called metritis, and inflammation of the mammary gland is mastitis.

Nervous and respiratory system disorders

This category includes terms describing inflammatory processes in the structures of the brain, its meninges, and the respiratory organs.

• Nervous system: inflammation of the brain tissue itself is translated as encephalitis. If the pathological process affects the meninges as a whole, the term meningitis is used. To specify involvement of the arachnoid mater specifically, the word arachnoiditis is applied.
• Respiratory system: inflammation of the larynx is laryngitis, and inflammation of the trachea is tracheitis. Inflammation of the pleura (the serous membrane covering the lungs) is called pleuritis.
• Lymphoid ring: inflammation of the tonsils has two equivalent names in Latin — amygdalitis or tonsillitis.

Specifying localization with prefixes

In clinical practice, the inflammatory process often encompasses not the entire organ, but only a specific membrane or surrounding adipose tissue. In such cases, special spatial prefixes are added to the Greek root along with the suffix -itis:

• Endo- (within): indicates involvement of the inner layer. For example, inflammation of the inner lining of veins is endophlebitis.
• Peri- (around, outer coat): indicates involvement of the outer layer of an organ. Inflammation of the outer coat of the same veins is periphlebitis.
• Para- (near, adjacent tissues): denotes inflammation of the tissue located around an organ. For example, inflammation of the tissues around the pancreas is parapancreatitis.

Briefly: answers to topical questions

Class and exam questions

What else to study on this topic

• Greek and Latin doublets in organ names (why roots differ from standard anatomical Latin).
• Declension of nouns ending in -itis according to third-declension rules.
• The difference between terms with the -itis suffix and other pathologies (e.g., proctitis, proctocele, and proctalgia).
• Agreement of adjectives with feminine inflammation names.

Other topics in the section "Self-Preparation for Clinical Terminology Quiz"

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