Mosquito bite-like swelling on inner thigh

If the inner thighs are like mosquito bites and there is severe itching, the most likely cause is eczema. There are many causes of eczema, which can occur anywhere on the body. The itching of eczema will increase significantly at night. After understanding whether the mosquito bite-like bumps on the inner thighs are eczema, we can make a judgment based on our own situation.

The causes of eczema are complex and are often the result of the interaction of internal and external factors. Internal factors such as chronic digestive system diseases, mental stress, insomnia, excessive fatigue, mood changes, endocrine disorders, infections, metabolic disorders, etc., and external factors such as living environment, climate change, food, etc. can all affect the occurrence of eczema. External stimuli such as sunlight, cold, dryness, heat, hot water washing, various animal furs, plants, cosmetics, soaps, artificial fibers, etc. can all induce it. It is a delayed allergic reaction caused by complex internal and external factors.

Clinical manifestations

1. According to the manifestation of skin lesions, it is divided into three stages: acute, subacute and chronic.

(1) Acute eczema lesions initially appear as numerous densely packed millet-sized papules, papulovesicles or small blisters with a flushed base that gradually merge into patches. Due to scratching, the tops of the papules, papulovesicles or blisters may be scratched to reveal obvious punctate exudation and small erosive surfaces with unclear edges. If secondary infection occurs, the inflammation will be more obvious and may form pustules, pus scabs, folliculitis, furuncles, etc. Conscious severe itching. It often occurs on the head, face, behind the ears, distal limbs, scrotum, and perianal area, and is often distributed symmetrically.

(2) Subacute eczema After the inflammation of acute eczema is alleviated, the skin lesions are mainly small papules, scabs and scales, with only a small amount of papulovesicles and erosions. Still have severe itching.

(3) Chronic eczema often turns into chronic eczema due to repeated attacks of acute or subacute eczema. It may also start as chronic eczema. The symptoms include thickening and infiltration of the skin in the affected area, brown-red or pigmentation, rough surface, scaling, or scabs due to scratching. Conscious itching. It is commonly found in the calves, hands, feet, elbows, popliteal fossa, vulva, and anus. The course of the disease is uncertain, prone to relapse, and difficult to heal.

2. According to the scope of skin lesions, it is divided into two categories: localized eczema and generalized eczema.

(1) Localized eczema occurs only in specific parts of the body and can be named according to the part of the body, such as hand eczema, vulvar eczema, scrotal eczema, ear eczema, breast eczema, perianal eczema, and calf eczema.

(2) Generalized eczema has multiple lesions that spread or scatter to multiple parts of the body. Such as nummular eczema, autosensitive eczema, and xerotic eczema.