**Definition:**
Hydrocortisone, also known as cortisol, is a steroid hormone produced by the adrenal glands. It is widely used in its synthetic form as a medication to reduce inflammation and suppress immune responses.
**Functions:**
Hydrocortisone acts as an anti-inflammatory and immunosuppressive agent. It works by inhibiting the release of substances in the body that cause inflammation and allergic reactions. It is also involved in regulating metabolism, immune response, and stress.
**Applications:**
Hydrocortisone is commonly used in:
1. **Medical Treatments:** Treating conditions like allergies, eczema, psoriasis, and arthritis.
2. **Topical Creams/Ointments:** For skin inflammation, rashes, and insect bites.
3. **Injections:** For severe allergic reactions or adrenal insufficiency.
4. **Cosmetic Industry:** In formulations to soothe irritated skin.