Living in a humid region increases sweat and the accumulation of moisture, contributing to the aggravation of the skin. Similarly, poor hygiene can exacerbate friction as this brings dirt and other particles to build up, increasing the potential and severity of an inflammatory response. Infants tendency to drool onto their skin folds also puts them at greater risk for infection and intertrigo. Diagnosis
Streptococcal intertrigo is diagnosed by a medical professional after performing a detailed physical examination and taking an overnight culture of the affected areas. A second sample is tested with a rapid antigen detection test for Group A streptococcus. Upon physical examination, streptococcal intertrigo commonly presents with a marked area of redness of the skin, a distinct, foul smell, and a lack of satellite lesions. The presence of satellite lesions, or lesions smaller and further away from the main affected region, may point to a differential diagnosis of candidal intertrigo, which is a more common cause of these characteristics. Streptococcal intertrigo is frequently underdiagnosed and should be considered as a causative agent when standard therapy for candidal intertrigo fails.Other differential diagnoses which may present similarly include seborrheic dermatitis, atopic dermatitis, irritant contact dermatitis, allergic contact dermatitis, mixed bacterial intertrigo, scabies, erythrasma, and inverse psoriasis. Prevention
Given the main etiology of streptococcal intertrigo is the warm and moist skin surface, in order to prevent future infection and repeat incident of this kind, it is best to keep the affected area and other skin folds clean and dry of moisture.
Streptococcal intertrigo is a skin condition that is secondary to a streptococcal bacterial infection. It is often seen in infants and young children and can be characterized by a fiery-red color of the skin, foul odor with an absence of satellite lesions, and skin softening (due to moisture) in the neck, armpits or folds of the groin. : 262  Newborn children and infants commonly develop intertrigo because of physical features such as deep skin folds, short neck, and flexed posture. Prompt diagnosis by a medical professional and treatment with topical and/or oral antibiotics can effectively relieve symptoms. Etiology
The main causes of intertrigo are mechanical factors, such as heat and maceration of the skin, and secondary infections, which mostly happens due to moisture build-up in the skin folds, making those areas ideal feeding places for secondary bacterial and fungal infections. A lot of cases of this disease are seen in individuals with diabetes mellitus since they have higher pH levels in their skin folds because of their condition. Given these reasons mentioned above, there have been higher cases of intertrigo in individuals with obesity, diabetes mellitus, immunodeficiency secondary to virus infection, large skin folds, are bedridden, or wear diapers that trap moisture (i.e. babies or older adults using incontinence supplies). Signs and symptoms
Streptococcal intertrigo commonly presents with a beefy-red, smooth, shiny lesion that has well-defined borders. There are no satellite lesions surrounding the area, and a distinct foul smell is common. The infection may be accompanied by general malaise and a low-grade fever.