Which condition presents as a red lump growth from the nail bed?

The condition characterized by a red lump or growth emerging from the nail bed is indeed pyogenic granuloma. This lesion is often a result of trauma or irritation to the nail area, leading to an abnormal growth of blood vessels and inflammatory tissue. Pyogenic granulomas are typically red, dome-shaped, and can bleed easily, which helps in distinguishing them from other nail bed conditions.

In comparison, pseudomonas infections generally cause a greenish discoloration of the nail and might lead to a foul odor, but do not typically present as a distinct lump. Onychomycosis, which refers to a fungal infection of the nail, leads to changes in nail thickness, color, and texture but does not form a protruding growth from the nail bed. Tinea pedis, commonly known as athlete's foot, affects the skin of the feet and can sometimes involve the area around the nails, but it does not produce a red lump growth from the nail bed. Thus, pyogenic granuloma clearly stands out as the correct choice based on its specific presentation and characteristics.