Sebaceous cysts should not be squeezed, as they are prone to secondary infections. Sebaceous cysts are mainly due to the sebaceous glands are stimulated, excessive secretion of sebum caused by the retention of cysts, belong to the benign disease, although the hand squeeze the way to squeeze out the material inside, but easy to squeeze the situation is not clean, and in the process of squeezing will form damage, which will lead to secondary infections, ulceration, vesiculation and redness and swelling. In addition, if you squeeze too much, it will also form excessive stimulation of the subcutaneous cystic cavity, so that it will continue to grow to the surrounding tissue, the sebaceous cystic cavity enlargement, leading to the aggravation of the disease, so it is not recommended that the patient to squeeze the lesion site with their own hands. Sebaceous cysts are completely curable, but need to be treated in a specialized hospital.