Answer to your Health Question
What could it be? My other leg does not have one.
It could be milia. Milia are keratin-filled cysts, or simply little globs of protein under the skin. There are generally two types of milia, primary and secondary.
Primary milia may result from oil glands that have not fully or properly developed. Secondary milia result from trauma to the skin.
Milia are common non-cancerous (benign) skin findings in people of all ages.
The formation of milia is often due to sun-induced changes as the skin ages.
Milia occur when dead skin becomes trapped in small pockets at the surface of the skin.
Secondary milia often develop after injury (trauma) or blistering.
The key to getting rid of milia is realizing that they have no escape route, those little bumps are trapped under the skin. So, to get them out, youll need to have a professional like a dermatologist or aesthetician extract them.
You can extract the milia yourself, but this involves risks.
It could be also Erythema nodosum.
Erythema nodosum is an allergic skin condition usually on the legs.
The list of treatments mentioned in various sources for Erythema nodosum
includes the following list.