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Insulin pump therapy and the use of flash or continuous glucose monitoring in children is increasing. The diabetes devices are attached to the skin for several days to weeks with a strong adhesive, and recently, several cases of allergic contact dermatitis in children caused by components of the adhesive have been reported. In this review, we discuss such problems. The most frequent cause of allergic contact dermatitis is acrylates in the adhesive material, and the problem is serious and calls for rapid development of devices used in the treatment and monitoring of Type 1 diabetes without allergenic agents.

Pyoderma gangrenosum (PG) is a rare, ulcerative skin disease. Atypical PG is characterized by rapidly evolving painful vesicles and enlarging bullae. Minor trauma or surgery is considered the cause in 25-50% of PG lesions. PG often mimics necrotizing infection and may therefore be inadequately treated. We present a patient with rapidly progressing bullous PG. The lesions were initially treated surgically, which led to exacerbation of the ulcers. A decision of surgery should be preceded by bacterial culture and microscopy and in case of uncertain diagnosis also by histopathologic examination.

According to the American College of Rheumatology criteria, knee osteoarthritis can be diagnosed solely from clinical or radiological findings. The cardinal symptom is pain during activity or at rest. To score pain and functional deficits, several systems have been developed among which visual analogue scale for pain scoring and Western Ontario and McMaster Universities osteoarthritis index, Knee Injury and Osteoarthritis Outcome Scale or Oxford Knee Score for combined scoring of pain and function are the ones used most frequently. The severity of cartilage degradation is determined by X-ray and arthroscopy. There is still not consensus on magnetic resonance imaging criteria for the diagnosis and severity of knee osteoarthritis.