A lump formed on the scalp after a head injury.

After a scalp injury, the development of a fleshy lump may be caused by factors such as hematoma, infection, or scar hyperplasia, and targeted treatment should be based on the specific cause. The detailed analysis is as follows:

1. Hematoma

The scalp has a relatively rich blood supply. After injury, blood vessels are easily damaged, leading to hematoma formation. If not promptly resolved, the hematoma may organize into fibrous tissue, presenting as a persistent, localized hard lump. This can be alleviated using hot or cold compresses.

2. Infection

A scalp injury creates a wound. If local cleanliness and hygiene are neglected, the wound may become infected. Under stimulation by pathogens, symptoms such as redness, swelling, and pain may occur. In such cases, medications like amoxicillin capsules or roxithromycin capsules may be taken under medical guidance to relieve symptoms.

3. Scar Hyperplasia

Scar hyperplasia is a raised skin lesion formed by excessive proliferation of tissue following local injury. It can result in a persistent lump at the wound site that is difficult to resolve. Topical medications such as tretinoin cream or polysulfated glycosaminoglycan cream may be used under medical supervision to alleviate the condition.

In addition to the above common causes, other conditions such as folliculitis, sebaceous cysts, or hemangiomas could also be responsible. If any discomfort occurs, prompt medical evaluation and timely treatment are recommended to avoid delaying diagnosis and management.