Why is it das Rheuma?

Rheuma ends in -ma, but that ending doesn’t settle the article: in a German dictionary, 75% of -ma nouns take das, 20% take die, and 5% take der. So learn it with its article: das Rheuma.

Which endings you can rely on
Sense 1
das

Meaning

[1] Medicine: General complaints on the support and musculoskeletal system with flowing, tearing and pulling pain, which are often associated with functional restriction

[1] Medizin: allgemeine Beschwerden am Stütz- und Bewegungsapparat mit fließenden, reißenden und ziehenden Schmerzen, die oft mit funktioneller Einschränkung einhergehen

Examples

[1] "In addition, Uwe has painful rheumatism and already several heart surgery"

[1] „Außerdem hat Uwe schmerzhaftes Rheuma und bereits mehrere Herzoperationen hinter sich.“

[1] "Rheumatism was beaten on his left arm and shoulder joint, probably a memory of the trench war, so that he was encouraged for free exercises"

[1] „Rheuma war ihm auf den linken Arm samt Schultergelenk geschlagen, wohl eine Erinnerung an den Grabenkrieg, so daß er zu Freiübungen angehalten war.“
More source examples (1)

These dictionary examples can include historical and less common uses.

[1] "The press officer made her the application of ant spiritus against rheumatism"

[1] „Der Pressechef machte ihr die Anwendung von Ameisenspiritus gegen Rheuma klar.“

Declension

1 Singular Plural
Nominativ das Rheuma —
Genitiv des Rheumas —
Dativ dem Rheuma —
Akkusativ das Rheuma —

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary