Tiny bumps or welts on a horse after midge exposure

Read time: 3 minutes

Overview

Tiny bumps or welts after midge exposure are commonly linked to a skin reaction to the bites themselves or to irritation from rubbing and scratching. They can look like small raised lumps, pink patches or scattered itchy spots. Most cases are mild, but it’s worth checking the skin closely because several things can look similar.

Things To Check

1. Check when the bumps appear, especially after turnout at dusk, dawn or on still, humid days when midges are often more active.

2. Look closely at the skin for redness, heat, swelling, broken skin, scabs, discharge or areas where the horse has rubbed.

3. See whether the bumps are limited to common midge-prone areas such as the mane, tail head, belly, ears or face.

4. Notice whether your horse is stamping, tail swishing, rubbing, head tossing or generally more restless than usual.

5. Check whether the skin feels dry, flaky, greasy or damp, as that can change how irritated it looks.

6. Think about any recent changes in turnout, stable routine, grooming products, rugs or feed that might have coincided with the skin reaction.

Common Causes

The most common cause is a mild local reaction to midge bites, which can leave small raised bumps and itching.

Another common possibility is irritation from scratching, rubbing or stamping after the bites, which can make the skin look lumpier than it first was.

Some horses are simply more sensitive to insect bites during fly season and may develop a stronger skin response than others.

Less commonly, a skin infection, allergy or another skin condition can look similar, especially if the area becomes sore, crusted or keeps coming back.

What To Do

Start by checking the affected area gently and keeping an eye on whether the bumps are spreading, settling or becoming more irritated.

Reduce exposure where you can by avoiding peak midge times when practical, using a well-managed turnout routine and keeping the horse as comfortable as possible.

Try not to over-wash or scrub the area, as that can sometimes make sensitive skin feel worse.

If your horse has rubbed the skin, keep the area clean and watch for any signs of broken skin or infection.

Make a note of where the bumps appear and how often they happen. That can help you spot a pattern across the season.

If the irritation keeps returning, it may be worth reviewing your fly-season routine with your vet or equine nurse.

Products That May Help

If your horse tends to react to midges or gets irritated during fly season, this collection may be useful alongside your usual turnout and grooming routine.

Horse Fly Sprays & Summer Care

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