When a pyogenic granuloma turns black

Because pyogenic granuloma contains many small blood vessels, even minor trauma can cause bleeding beneath the surface. As blood dries, a dark crust or black area may form. A tight twist of tissue or treatment can also reduce blood flow and change its colour. These explanations are possible, not a diagnosis from a photograph.

Black colour can also occur in other skin lesions. A clinician considers the whole pattern, including whether the mark is new, uneven, firm, painful, ulcerated, or changing at the edges. Do not peel off the crust to inspect it.

Arrange a dermatology assessment, especially if the colour change happened without obvious trauma or the bump is growing. Keep it protected from rubbing and use gentle pressure for any fresh bleeding. Do not apply acids, wart products, or household remedies. If examination confirms pyogenic granuloma, a procedure such as [Curettage And Cautery](/treatments/surgical-dermatology/curettage-and-cautery/) may remove it and address the base.

Seek same-day advice for uncontrolled bleeding, rapidly increasing swelling, severe pain, or a wound with spreading redness and discharge. Prompt assessment is also appropriate when a lesion becomes black, develops several colours, or changes shape, because appearance alone cannot safely distinguish a crusted pyogenic granuloma from another lesion.

Does the dark area look like dried blood or crust? Do you recommend tissue examination? What signs should make me return sooner after treatment?