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Botfly in a Dog’s Scalp: What Owners Need to Know

A botfly infection occurs when a botfly larva (Cuterebra) burrows under a dog’s skin and develops inside a swelling called a warble. While this can happen anywhere on the body, the scalp or head area can be especially alarming because it’s more visible and sensitive.

How Dogs Get Botflies

• Botflies lay eggs near rabbit or rodent burrows.

• When a curious dog sniffs the area, larvae can attach to the skin and burrow under.

• The scalp or face may be affected if the dog sticks its head into contaminated soil or nests.

Symptoms of Botfly in the Scalp

• A raised lump or swelling on the head or scalp

• A small breathing hole in the center of the lump

• Redness, irritation, or oozing fluid

• Constant scratching or pawing at the head

• Sensitivity or pain when touched

• In rare cases, neurological symptoms if larvae migrate into deeper tissues

Why You Shouldn’t Remove It at Home

• Squeezing can rupture the larva, causing severe infection.

• Incorrect removal can leave parts of the larva inside.

• The scalp area has many blood vessels—making complications more risky.

Veterinary Treatment

• Safe removal: A veterinarian carefully extracts the larva through the breathing hole.

• Wound care: The area is cleaned and disinfected.

• Medications: Antibiotics or anti-inflammatories may be prescribed.

• Follow-up: Most dogs heal well once the larva is removed.

At-Home Care After Removal

• Keep the wound clean and dry as instructed by your vet.

• Prevent your dog from scratching by using an Elizabethan collar (cone).

• Give all prescribed medications on time.

• Monitor the area for swelling, discharge, or signs of infection.

Prevention Tips

• Keep your dog away from rodent and rabbit burrows.

• Check your dog’s head and body regularly during late summer and fall (botfly season).

• Maintain a clean yard and limit unsupervised roaming in rural areas.

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Bottom line: A botfly in a dog’s scalp looks like a lump with a breathing hole. Do not try to remove it at home—always see a vet for safe treatment. With proper care, most dogs recover quickly.