手臂上有一点点的红点是什么原因

来自黄玲娟医生的专业解答，快打开看看是否又获得了新的知识点～

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三知健康

病情分析：这种情况主要考虑是皮下的出血点或是过敏性的皮炎，也不能排除可能有传染病的可能。出现这种情况主要的原因可能是因为接触刺激性物品或是和饮食有一定的关系，或是免疫力的下降等原因所导致。

黄玲娟

副主任医师

提示：本内容仅作参考，不能代替面诊，如有不适请尽快线下就医

问题描述：我发现我的妹妹手臂上有一点点的红点，这种情况是什么原因导致的呢？