Swelling of the little finger may be caused by trauma, mosquito bites, frostbite, infection, rheumatoid arthritis and so on.
1. Trauma: such as contusion, laceration, can lead to small thumb fracture and soft tissue injury, producing soft tissue pain, swelling and other symptoms.
2. Mosquito bites: when the skin in the finger area is bitten by mosquitoes, it can cause insect bite dermatitis, resulting in swelling, itching, pain and other phenomena of the skin in the finger area.
3. Frostbite: Frostbite is caused by local vasospasm, cold irritation, poor blood circulation, which can easily cause finger swelling, itching, burning pain and other symptoms.
4. Infection: After the finger is damaged by outside, it may cause local infection, which is manifested as swelling, pain and so on.
5. Rheumatoid arthritis: swollen finger joints are a manifestation of rheumatoid arthritis, which can occur in a single joint or in multiple joints at the same time.
Swelling of the little finger should go to the hospital in time, under the guidance of the doctor for the correct treatment.