What causes dandruff on a horse's back and rump?

Read time: 3 minutes

Overview

Dandruff on a horse’s back and rump is often caused by dry skin, sweating, grooming irritation or a coat change, and sometimes by skin conditions or parasites. In many horses it’s a mild issue, but it’s worth checking the skin properly so you can spot anything that needs more attention.

Things To Check

1. Check whether the flakes are on one area only or spread over the back, rump or tail head.

2. Look closely for redness, scabs, broken skin, soreness, hair loss or a greasy feel to the coat.

3. Think about recent changes in grooming, clipping, rugging, turnout, bedding or diet.

4. Check whether the skin seems worse after exercise, sweating or being left damp.

5. Feel for heat, tenderness or swelling, especially if the horse is reacting when you brush the area.

6. Look for signs of rubbing, stamping, tail swishing or biting at the area, which can point to irritation.

7. Check other horses and the stable or field environment for anything that might suggest a shared cause, such as parasites or dusty conditions.

Common Causes

The most common reason is simple dry skin, especially in horses that have been clipped, heavily groomed, living in dry stables or rugged for long periods.

Sweat and not fully drying after exercise can also leave flaky skin behind, particularly on the back and rump where tack or rugs sit.

Grooming too hard, using harsh products, or frequent washing can irritate the skin and make flaking more noticeable.

Less commonly, dandruff can be linked to parasites, fungal or bacterial skin problems, allergies or general skin sensitivity.

In some horses, a poor coat condition or seasonal coat change can make flakes more obvious for a while.

What To Do

Start by keeping the area clean, dry and gently groomed. Use a soft brush and avoid scrubbing the skin if it already looks irritated.

If the horse has been sweating, make sure they are properly dried and that rugs, tack or grooming kit aren’t holding moisture, dust or dirt against the skin.

Review anything that may be irritating the skin, such as rough brushes, strong shampoos, dusty bedding or rugs that rub.

Keep an eye on whether the dandruff improves with a calmer grooming routine and better coat care over a week or two.

If the flakes are mild and the horse seems comfortable, routine skin care and good stable hygiene are often the most useful first steps.

Products That May Help

A gentle washing and coat-care routine can be useful if your horse’s skin is dry, flaky or sensitive, especially after sweating or during coat changes.

Shampoos & Washes

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