Itchy red bumps on the outside of the thighs may be caused by allergic dermatitis, contact dermatitis, folliculitis and eczema.
1. Allergic dermatitis: allergens stimulate the skin of the outer thighs, causing subcutaneous capillary dilation and edema, mast cells release a large number of inflammatory mediators, so that the skin appeared small red bumps, accompanied by symptoms of itching.
2. Contact dermatitis: the outer thigh skin contact with certain allergenic substances, causing the outer thigh skin inflammatory reaction, can be manifested as the outer thigh skin red bumps, and itching symptoms.
3. Folliculitis: the hair follicles on the outer thighs are infected with bacteria or fungi such as Staphylococcus aureus because of high temperature, scratching, bad habits, etc., which may cause folliculitis, and red bumps and itchy situation may also occur.
4. Eczema: Eczema may be triggered by more sweating of the thigh skin, skin allergies, microbial irritation, etc. Eczema can cause the skin to develop a certain degree of itchiness. Eczema can make the skin produce a certain inflammatory reaction, causing capillary expansion, producing pimples or nodules, the appearance of red bumps, accompanied by varying degrees of itching.
If the patient is very itchy red bumps on the outside of the thighs, it is recommended to go to the hospital in a timely manner, identify the cause of the disease and follow the doctor’s instructions for targeted treatment.