There is a small very red spot on his leg with a black dot in the middle, which feels like a scab and is slightly raised.

The photo is too blurry to give an accurate judgment. If the cat’s skin has formed a scab but shows no dandruff or intense itching, it is usually a skin injury that became infected and then formed a scab after the cat scratched and bled. The owner should first prevent the cat from scratching and can treat the wound topically – shave the surrounding fur and apply Chuanglide spray or erythromycin ointment to reduce inflammation and fight infection, twice a day.

However, a skin condition cannot be ruled out. Papules, scabs, hair loss, red and itchy skin are common symptoms of feline skin disease, which can be parasitic, bacterial, or fungal. It is recommended to have a skin scraping done at the hospital for targeted treatment. If a vet visit is inconvenient, shave and spread the fur around the affected area, wipe the scabbed skin with saline, then apply Pipute spray and zinc oxide ointment. Keep an Elizabethan collar on during treatment.