Final answer:
The differentials for discoid eczema include contact dermatitis, tuberculin reaction, and autoimmune diseases such as diabetes mellitus type I, multiple sclerosis, and rheumatoid arthritis.
Step-by-step explanation:
Differentials for Discoid Eczema
Discoid eczema, also known as nummular eczema, is a chronic inflammatory skin condition. The differentials for discoid eczema include:
- Contact dermatitis is caused by exposure to irritants or allergens.
- Tuberculin reaction, which is a delayed-type hypersensitivity response to a tuberculosis skin test.
- Autoimmune diseases such as diabetes mellitus type I, multiple sclerosis, and rheumatoid arthritis, can cause skin manifestations including eczema.
It's important to note that a proper diagnosis and evaluation by a healthcare professional is necessary to confirm the presence of discoid eczema and rule out other possible conditions.