Acute chest syndrome | Decreased lung function | Hypertension | Renal papillary necrosis |
Adenotonsillar disease | Delayed growth/puberty | Hypocalcemia | Reticulocytopenia |
Albuminuria | Depression | Hyposthenuria | Reticulocytosis |
Amenorrhea | Dizziness | Nephropathy | Retinopathy |
Anemia (severe) | Electrolyte imbalance | Osteomyelitis | Retinal hemorrhage |
Aplastic crisis | Elevated urinary urobilinogen | Pain, back | Rhabdomyolysis |
Arthralgia | Elevated serum transaminases | Pain, chest | Seizure |
Avascular necrosis of hip/shoulder | Elevated transcranial doppler (TCD) ultrasound velocities | Pain, joint | Septicemia |
Bacteremia | Fever | Pain, long bone | Silent organ infarction |
Bone infarction | Empyema | Pain, severe abdominal | Skin ulcer |
Cardiac arrythmia | Hand-foot syndrome/dactylitis | Pain, sternal or rib | Splenic sequestration |
Cardiomegaly | Headache | Priapism | Splenomegaly |
Cerebrovascular accident | Hematuria | Proteinuria | Stroke |
Cholecystitis | Hemiplegia | Pneumonia | Transient ischemic attack (TIA) |
Cholelithiasis | Hemolysis | Pulmonary embolism | Transfusion, unanticipated |
Cognitive dysfunction | Hepatic sequestration | Pulmonary hypertension | Vaso-occlusive pain |
Constipation | Hepatomegaly | Pulmonary infiltrate on chest x-ray | Â |
Cranial nerve palsy | Hospitalization > 24 h | Pyelonephritis |  |
Death | Hyperbilirubinemia | Renal failure | Â |
Decreased renal function | Hypersplenism | Renal insufficiency | Â |