This section is from the book "Hartmann's Theory Acute Diseases And Their Homoeopathic Treatment", by Charles J. Hempel. Also available from Amazon: Theory of acute diseases, and their homoeopathic treatment.
§ 152. Rheumatic affections.
These affections are described under two principal heads, rheumatism and catarrh. By rheumatism we understand the rheumatic irritation of the muscles, ligaments and aponeuroses; by catarrh, a similar irritation of the mucous membranes, particularly those of the bronchi, trachea, frontal sinuses and nose. Both classes arise from the same cause, have the same character, and can pass the one into the other.