Commonly misused diagnosis for musculoskeletal pain in children. “Leg Aches” has been proposed as a term to replace growing pains due to confusion in the literature and the dismissing by some health professionals of leg aches as being just ‘growing pains’. The differential diagnosis includes potentially very serious conditions
True syndrome of “growing pains”:
• generally peaks around ages 4 to 5 (can occur up to age 12)
• generally occurs in popliteal fossa
• usually relieved by gentle massage
• only occurs at night (growing pains do not occur during day)
• benign and self limiting – treatment not usually needed.
• May occur in up to 15-30% of children
Intense cramping pain behind knee, in deep musculature of posterior leg or anterior thigh – usually poorly localised; usually lasts up to 20 minutes, later in the day and may wake child from sleep; does not alter gait; no point tenderness on palpation; usually bilateral; does not limit activities the following day. As part of differential, Check for point tenderness, guarded or restricted joint motion and any signs of systemic illness.
Cause of pain is unknown – but unlikely to be solely related to ‘growth’ – other suggested (speculated) factors include muscle fatigue, overexertion, chemical imbalances and genetic factors
Differential diagnosis – bone tumours (deep aching pain that is more localised); hip dysplasia; infections (eg Brodies abscess); juvenile chronic arthritis; spinal disorders; synovitis; Perthes disease; slipped capital femoral epiphysis
• Do not dismiss as growing pains; do not overlook potentially serious problems
• Reassurance of child and parents as to self limiting nature
• Stretching only treatment shown to be effective (ref)
• Massage and/or heating may help some
• NSAID’s can be tried at bedtime if waking from sleep