| Disease | Alarm symptoms | Differential diagnosis |
|---|
| Upper respiratory tract infection Common Cold in Adults | Prolonged clinical symptoms, malaise, dyspnoea | Pneumonia Pneumonia, pulmonary embolism Pulmonary Embolism |
| Conjunctivitis (viral infection not requiring antimicrobial treatment) Conjunctivitis | Impaired visual acuity, eye pain, photophobia, significant watering, significant erythema/oedema of the skin around the eye | Iritis Iritis (Inflammation of the Iris), periorbital cellulitis Facial Cellulitis in a Child, keratitis Keratitis |
| Cystitis Urinary Tract Infections | Fever, new back pain in addition to symptoms of urinary tract infection, malaise | Pyelonephritis |
| Skin disorders | Fever, extensive skin erythema/oedema/pain, malaise | Severe skin and soft tissue infections (erysipelas, cellulitis, necrotizing fasciitis) and other severe skin disorders Severe Infections of the Skin and Soft Tissues Erysipelas |