What causes dandruff and hair loss in horses?
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Overview
Dandruff and hair loss in horses can happen for a few common reasons, including dry skin, poor coat condition, rubbing, parasites, allergy-type irritation, or skin infection. In many cases it’s a management issue rather than something severe, but it’s worth checking the skin closely so you can work out whether it looks like simple dry coat or something that needs a vet’s input.
Things To Check
1. Check whether the dandruff or hair loss is in one area or spread over the body.
2. Look for redness, scabs, broken skin, heat, swelling, or any discharge.
3. Notice whether your horse is rubbing, scratching, stamping, or seeming uncomfortable.
4. Think about recent changes in turnout, rugs, bedding, grooming, washing, or feed.
5. Check for signs of lice, mites, or other parasites, especially if the coat looks dull or itchy.
6. Feel whether the skin is very dry, greasy, flaky, or sensitive to touch.
7. See whether the hair loss lines up with pressure points from tack, rugs, or equipment.
Common Causes
Dry skin and a dull coat are common causes, especially in winter, after clipping, or if grooming has been a bit heavy-handed.
Skin irritation from rugs, tack, mud, sweat, or harsh shampoos can also lead to flaking and hair loss.
Parasites such as lice or mites may cause itchiness, dandruff, and patchy hair loss.
Allergy-type skin irritation or mild skin infection can also cause flaky skin, rubbing, and coat changes.
Less commonly, hormonal or nutritional issues may contribute to poor coat condition, especially if the problem is ongoing or widespread.
What To Do
Start by keeping the area clean, dry, and easy to monitor. Groom gently so you can remove loose scurf without irritating the skin, and avoid over-washing unless the coat really needs it.
Review rugs, tack, bedding, and turnout conditions to see whether anything might be rubbing or making the skin damp and dirty. If the horse is itchy, note when it happens and whether it’s seasonal or linked to a particular environment.
If the skin looks mildly dry but otherwise calm, a steady grooming routine and sensible coat care may help support the skin and coat. If the problem keeps coming back, spreads, or starts to look sore, it’s best to get it checked.
Products That May Help
For horses with dry coats, regular grooming needs, or skin that’s a bit flaky but not obviously sore, this collection may be useful as part of a gentle coat-care routine.
Related Questions
How do I tell if my horse has lice or mites?
Can rug rubbing cause hair loss in horses?
What is the best way to groom a horse with a dry coat?
Atlas is here to support owners with practical, easy-to-understand guidance. It is not a substitute for professional veterinary advice. If you're concerned about your animal's health, symptoms worsen, or something doesn't feel right, contact your vet.