Necrobiotic xanthogranuloma is a rare cutaneous condition that can be mistaken for atypical necrobiosis lipoidica. It has a strong association with a paraproteinaemia, which may progress to frank haematological malignancy. We describe four patients with variable cutaneous features, and their treatment response.

We report three cases of delusional parasitosis (DP) in patients with well-established Parkinson's disease, all of whom were taking dopamine agonists. In all three cases, the DP resolved rapidly when the drug was withdrawn.

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