Why is my horse developing scabs or hair loss where ticks were attached? | arlo.® Atlas
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Overview
It’s quite common for a horse to develop a small scab, local irritation or a patch of hair loss where a tick was attached. The skin often reacts to the bite itself, and sometimes the area stays a bit sore while it heals. If the patch is getting larger, very red, hot, swollen or wet, there may be more going on than simple healing.
Things To Check
1. Look at the exact spot where the tick was attached and note whether there is a single scab, a bald patch or several affected areas.
2. Check for redness, heat, swelling, broken skin, discharge or a smell coming from the area.
3. See whether your horse is rubbing, stamping, twitching the skin or seeming bothered when you touch the area.
4. Think about when the problem first appeared and whether it has stayed the same, improved or spread.
5. Look for other tick sites on the body, especially under the mane, in the ears, along the face, under the tail and in the lower limbs.
6. Check for signs of general skin irritation elsewhere, such as dandruff, bumps or multiple small scabs.
7. Consider whether the horse has been in long grass, woodland edges or other tick-prone areas recently.
Common Causes
The most common reason is a normal skin reaction after the tick has detached or been removed. The bite can leave a small scab and a bit of local hair loss while the skin heals.
Sometimes the area can become mildly inflamed or itchy, especially if the tick was attached for a while or the spot has been rubbed.
Less commonly, the area may have become infected, particularly if the skin was damaged or the horse has been scratching at it.
If there are several scabs or patches of hair loss, the cause may be broader skin irritation rather than just the original tick bite.
What To Do
Keep the area clean, dry and easy to monitor. If the skin is only mildly affected, gentle observation is often enough while the scab naturally settles.
Avoid picking scabs off, as that can slow healing and make the area more irritated. It’s also worth reducing rubbing from rugs, tack or headcollars if the spot is in a place that gets brushed regularly.
Check the rest of the coat and skin over the next few days so you can spot any new areas early. If ticks are a recurring issue where your horse lives or turns out, review grazing, hedge lines and high-risk areas as part of your routine.
If the patch is getting worse rather than better, or your horse seems uncomfortable, it’s sensible to ask your vet for advice.
When To Contact A Vet
Contact your vet if the area becomes increasingly red, hot, swollen or painful, if there is discharge, if the hair loss is spreading, or if your horse seems unwell. A vet should also check it if you’re not sure the skin is healing normally, or if ticks are appearing in large numbers.
Products That May Help
If ticks are something you’re checking for regularly, this collection may be useful as part of your wider routine for managing insect pressure and keeping on top of daily care.
Related Questions
How should I remove ticks from my horse safely?
Can tick bites in horses leave scars or bald patches?
How can I check my horse for ticks after turnout?
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.