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Limp Leo Leonidas MD, FAAP
Warning: This section is for my medical students. If you are a "worrier" type or a very anxious parent, please talk to your clinician about your child's problem or symptoms, rather than reading this differential diagnosis.
Common causes of limp that many primary care physicians first think about are: septic arthritis, osteomyelitis, toxic synovitis, slipped femoral capital epiphyses, leukemia, and bone tumors. Others in this section are not common but still should be listed.
Infections
Osteomyelitis Septic Arthritis Acute Myositis Pyomyositis Diskitis & Intervertebral Disc Infection Epidural Abscess Acute Appendicitis Retroperitoneal Masses Acute Iliac Adenitis
Inflammatory Conditions
Toxic Synovitis Henoch-schonlein Purpura Acute Rheumatic Fever Juvenile Rheumatoid Arthritis Systemic Lupus Erythematosus Polyarteritis Nodosa Dermatomyositis Serum Sickness Ulcerative Colitis; Regional enteritis Lupoid Hepatitis
Neoplasms
Leukemia Malignant Bone Tumors Benign Bone Tumors
Hematologic Conditions
Hemophilia Sickle-Cell Anemia Phlebitis Scurvy Hypervitaminosis A
Trauma or Injury
Local Superficial Injury Ligamentous Strains & Sprains Tendon Disorders Muscle Bruising Fractures Child Abuse Injections Subluxation of Patella
Aseptic Necrosis & Osteochondritis
Legg-Calve-Perthes Disease Osgood-Schlatter Disease Freiberg Disease Kohler Disease Sever Disease Osteochondritis Dissecans Chondromalacia Patellae Larsen-Johansson Disease Sinding-Larsen Disease
Non-Painful Causes of Limp
Slipped Femoral Capital Epiphyses Flaccid Paralysis Spastic Paralysis Ataxia Involvement of Spine Muscular Dystrophy Arthrogryposis Joint Stiffness or Contractures Leg Length Discrepancies Coxa Vara Knock Knees Blount Disease Torsional Deformities of Lower Extremities Epiphyseal Dysplasias Postmeningococcal Skeletal Dystrophy Hysteria Mimicry
Reference:
Signs & Symptoms in Pediatrics 2nd Edition Tunnessen, Jr
Belly Pain Air Leaks From Lungs Acute Crying Back Pain Bed Wetting Big Lymph Node Big Spleen Blood in Urine Chronic Diarrhea Chest Pain Cough Coughing Up Blood Constipation Droopy Eye Enlarged Glands Eye Swelling Excessive Thrist Facial Paralysis Fainting Spell Feeding Problem GI Bleeding Headache Head Tilt Hives High ESR Hoarseness Joint Pain Limp Leg Pain Muscle Weakness Noisy Breathing Nose Bleeding Nose Obstruction Pyuria Recurrent Infection Red Green Urine Ringing in the Ears Scrotal Swelling Seizures Stiff Neck Swelling of the Parotic Gland Toe Walking Toeing In Toeing Out Unequal Pupils Vomiting Wheezing
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