Chalazion refers to a blepharocyst, and if it turns black and purple, it may be caused by bleeding from the cyst and may be a sign of aggravation.
A chalazion cyst is a cyst that forms when the opening of the chalazion is blocked by a thick secretion that prevents subsequent secretions from draining out. If the small blood vessel structure within the cyst tissue is damaged and triggers bleeding, a hematoma can form inside the cyst, which can lead to the cyst causing it to turn black and purple, which may be a sign of further aggravation.
Patients with blepharocysts can apply warm compresses to the eyelids to promote the regression of blepharocysts. If conservative treatment is not effective, patients can undergo surgery to remove the cyst and relieve eye discomfort.
It is recommended that patients with blepharocysts visit a hospital to have their condition evaluated and treated in accordance with their doctor’s instructions.