What are the possible causes of a round, pus-filled lesion on the head?

Question

Hello doctor,

When I was about six years old, I went to a barbershop and got a contagious thing on my head that lasted years. I was too small to know what it was, but I remember it was some form of fungus (circle shaped, full of pus, baldness). It took a long to get it removed by a dermatologist. So now that I am 20 years old, I got one on the left side of my head. It is a circle ball-shaped, filled with liquid that will not go away and keeps growing. I would like to know what it is called. Please help.

Answer 1

Hi,

Welcome to icliniq.com.

I understand your concern. "Circle ball-shaped" lesion filled with liquid on the left side of the head, as per your description, can be pilar cyst, tinea capitis, cystic hidradenoma, Abscess, eccrine spiradenoma, sweat gland growth, hidrocystoma and dermoid cyst. The list goes on and on. But first, I must see the lesion and assess it properly before diagnosing it. Please attach your clinical picture so I can make a precise diagnosis and suggest treatment options. Also, I need a little more information from you. How long has it been there? When did you notice? Is it painful? Does it itch? Do you have any similar lesions elsewhere? Thanks and regards.