Respiratory System (J00-J99)
- Bronchitis* – inflammation of the bronchial mucosa.
- Pharyngitis* (inflammation of the throat)
- Pneumonia* (pneumonia)
- Sinusitis (sinusitis)
- Tonsillitis* (tonsillitis)
- Tracheitis* (inflammation of the trachea)
Skin and subcutaneous (L00-L99)
- Vasculitides – autoimmune disease affecting the blood vessels.
Cardiovascular system (I00-I99).
- Infective endocarditis (endocarditis of the heart).
Infectious and parasitic diseases (A00-B99).
- Abscess fever
- Actinomycosis (radiation fungus)
- Lyme disease (Lyme disease) – infectious disease caused by the bacterium Borrelia burgdorferi.
- Brucellosis (Malta fever) – infectious disease transmitted from animals to humans.
- Chronic yersiniosis – disease caused by bacteria of the genus Yersinia.
- Epstein-Barr virus infection (EBV e.g. reactivated by tumor disease) Spotted fever – also called “lice fever” or faecal fever; infection with microorganisms of the genus Rickettsia (Rickettsia prowazekii), which is transmitted by lice, mites, ticks or fleas.
- Exanthema subitum* (three-day fever).
- Gastroenteritis* (gastroenteritis).
- Giardiasis* – small intestinal infection caused by Giardia lamblia (Giardia duodenalis, Giardia intestinalis, Lamblia intestinalis).
- Influenza infection* (common cold).
- Hand-foot-mouth disease* (HFMK; hand-foot-mouth exanthema) [most common cause: Coxsackie A16 viruses].
- HIV / AIDS
- Infectious mononucleosis* (synonyms: Pfeiffer’s glandular fever, infectious mononucleosis, mononucleosis infectiosa, monocytic angina or kissing disease, (Student’s) kissing disease, called) – common viral disease caused by the Epstein-Barr virus (EBV); this affects lymph nodes, but can also affect the liver, spleen and heart.
- Influenza (flu)
- Listeriosis – in humans sporadic infectious disease caused by bacteria of the genus Listeria.
- Malaria – tropical infectious disease transmitted by the Anopheles mosquito.
- Measles (Morbilli)
- Paratyphoid infection – infectious disease caused by the bacterium Salmonella enterica paratyphi (type A-C) from the family Enterobacteriaceae.
- Parotitis epidemica (mumps)
- Pneumococcal infection (in infants up to two years of age).
- Protozoonosis (a disease transmitted by protozoa), e.g. leishmaniasis, cryptosporidiosis.
- Pseudocroup* / croup cough – laryngitis, which leads primarily to swelling of the mucous membrane below the vocal cords.
- Ringworm* (erythema infectiosum)
- Rubella
- Relapsing fever (Engl. relapsing fever, spirillium fever) – bacterial infectious diseases caused by relapsing fever borrelia, which are characterized by multiple episodes of fever, so-called recurrent fever.
- Syphilis (lues; venereal disease).
- Tuberculosis
- Typhoid abdominalis – severe febrile infectious diseases, which are usually associated with diarrhea and caused by salmonella (Salmonella enteritica serovar typhi).
- Viral hemorrhagic fever (VHF), e.g. dengue fever – infectious disease that occurs mainly in the (sub-)tropics.
- Chickenpox* (varicella)
Mouth, esophagus (esophagus), stomach, and intestines (K00-K67; K90-K93).
- Abdominal abscess (encapsulated collection of pus in the abdominal cavity) – e.g., perforated appendicitis (ruptured appendix) or diverticulitis (abscess caused by rupture of the intestine based on inflammation of mucosal protrusions/diverticula)
- Appendicitis* (appendicitis).
- Chronic inflammatory bowel disease (Crohn’s disease, ulcerative colitis).
- Diverticulitis – disease of the colon in which inflammation forms in protrusions of the mucosa (diverticula).
Musculoskeletal system and connective tissue (M00-M99).
- Collagenoses (autoimmune disease of connective tissue: e.g., polymyositis, systemic lupus erythematosus (SLE)).
- Osteomyelitis (bone marrow inflammation).
- Rheumatic diseases (eg, rheumatoid arthritis, rheumatic fever).
- Vasculitides (autoimmune disease affecting the blood vessels: eg.B. Periarteritis nodosa; Kawasaki disease (synonyms: Kawasaki syndrome, mucocutaneous lymph node syndrome, MCLS) – acute, febrile, systemic disease characterized by necrotizing vasculitis (vascular inflammation) of small and medium-sized arteries.
Neoplasms – tumor diseases (C00-D48).
- Tumor diseases (below are details of tumors most commonly associated with fever):
- Acute leukemias (blood cancers).
- Bronchial carcinoma (lung cancer)
- Lymphoma (Hodgkin, non-Hodgkin)
- Hypernephroma (renal cell carcinoma).
- Breast carcinoma (inflammatory; inflammatory breast cancer).
- Liver metastases or hepatocellular carcinoma (hepatocellular carcinoma).
Ears – mastoid process (H60-H95).
- Otitis media (inflammation of the middle ear)
Psyche – nervous system (F00-F99; G00-G99)
- Encephalitis (inflammation of the brain).
- Meningitis* (meningitis)
Symptoms and abnormal clinical and laboratory findings not elsewhere classified (R00-R99).
- Thirst (thirst fever)
Genitourinary system (kidneys, urinary tract – reproductive organs) (N00-N99).
- Urinary tract infection*
- Pyelonephritis (inflammation of the renal pelvis)
Injuries, poisonings, and certain other sequelae of external causes (S00-T98).
- Burns (resorptive fever).
- Craniocerebral trauma (TBI, cerebral fever).
Operations
- After surgery (resorption fever) or risk of infection with fever.
Other causes
- Abscess (somewhere)
- Drug fever (synonym: drug fever) – mainly caused by hypersensitivity syndromes; fever occurs relatively soon after the first drug is taken and resolves within 72 hours after the drug is discontinued; examples: Analgesics, antihistamines, barbiturates, diuretics, salicylates, sedatives, and sulfonamides.
- Blood transfusions, vaccinations* (toxic fever).
- Heat accumulation (heat fever)
Legend
- Bold (= persistent fever, i.e. > 3 weeks); marked were diseases that occur frequently to occasionally.
- * Fever in children; marked were diseases that occur frequently to occasionally.
