My 3-week-old kitten has pus-filled knots on ear and private area.

It is difficult to diagnose an ear infection without examining the discharge under a microscope to see if there are any bacteria, yeast, or mites. Based on the pictures, it does not appear to be a large amount of discharge. There aren't any OTC ear medications for infections but you could clean the ear with just an ear cleaner labeled for cats and see if that helps. Clean three times a week for now and then once weekly and see if that gets rid of all the discharge. If not, he really needs to go to a vet for treatment.

That area is very infected and inflamed. There is not much you can do at home except give him a bath and keep it clean and dry. Keep the other kittens away so it can be spread or they can't make it worse A vet will have to examine how deeps those go and some antibiotics.

It appears that your kitten has an ear infection. This could be caused by mites, bacteria or a fungus. She will need to be seen by a veterinarian who will examine the ear with an otoscope, and he will take a swab of the discharge of the ear and look at it under the microscope. This should help with diagnosing the cause. Your kitty will then get medicine according to the diagnosis, usually ear drops. The ear will also need to be cleaned by the vet

These skin lesions look like bacterial or possibly fungal infection. Mites can be responsible for it as well. A clinical examination at your local veterinarian is essential to confirm these clinical suspicions and treat appropriately. Antibiotics may be needed. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

Poor kittens! These lesions could be a result of injuries from playing and subsequent infection/abscess formation, ringworm, or mange. If you feel adventurous, you can carefully try to use clippers to clip the fur around these lesions on both kittens and then clean the areas with an antiseptic solution, such as dilute chlorhexidine or dilute betadine. However, both kittens will likely need to go to the vet for further evaluation to determine if diagnostic testing and/or oral antibiotics are necessary. If the kittens are scratching at themselves, be sure that they are wearing e-collars (cones) to prevent further skin damage. I hope that all goes well!

It looks like your kitty has a skin and ear infection. The medications he was on likely did not treat the problems. He needs a difference antibiotic for the skin and a medication that goes into the ear. A vet needs to determine what kind of ear infection that is before prescribing medications. I would then discuss the underlying cause and I would highly suspect a food or environmental allergy. Kisses to your kitty!

Lucky is such a cutie! The open sores could be due from scratching from the fleas as well as scratching at his ears. The ear discharge indicates an ear infection, which can be caused by ear mites, bacteria, or yeast. Keep in mind as well that flea shampoo will not prevent the fleas, and he needs to be a flea prevention program to keep him from getting fleas again. I would have Lucky seen by a vet today. The sores may be infected from the scratching, he needs the cause of his ear discharge diagnosed and treated, and the vet can start him on a flea prevention program. He will also need vaccines. Please bring him into a vet today, it's important to have any ear problem examined and treated promptly because leaving it untreated can lead to hearing loss.