Is Dog Folliculitis Contagious to Humans? Should You Isolate?

1 What Is Folliculitis?

As the name says, it’s inflammation of the dog’s hair follicles, usually from clogged follicles due to hormone imbalance and excess sebum, then bacterial infection that swells and inflames them.

Biologically, folliculitis is the body’s defensive reaction to bacteria; the dog self-repairs through a series of responses, and if repair succeeds the owner may never notice. Once we see folliculitis, it means medication is needed, or it can worsen into serious pyoderma.

2 Is It Contagious to Humans?

A simple case of folliculitis won’t spread to people. But if pustules rupture badly and spread fungi (for example Microsporum) or bacteria, there is some risk — though it stays very low if you limit contact, wear gloves when applying medicine, and wash your hands afterwards. Folliculitis is far less contagious than parasites or eczema, so isolation isn’t necessary.

If you have more than one dog, or cats and other small animals, brief separation for a while may help — but don’t isolate all day; let the dog out to play each day to avoid stress and depression.

3 How to Treat It

1. For mild cases, dab the black spots gently with a cotton swab dipped in diluted alcohol to remove them (alcohol also disinfects the area), then apply erythromycin ointment to the red skin. Or use a pet skin spray and chlorhexidine solution to kill bacteria and aid repair.

2. Bathe regularly with a medicated shampoo; for serious cases, have the vet do or prescribe medicated baths.

3. Feed a light, non-greasy, easy-to-digest diet with more vegetables and fruit for vitamins, and keep the dog’s bowels regular.