Hydrocortisone belongs to a class of medications called corticosteroids. These work by reducing inflammation where it is topically applied. Hydrocortisone is available in a range of strengths, and healthcare providers may recommend different strengths depending on the severity and location of the psoriasis. It is applied directly to the skin, and may be used once or twice daily or as directed. While hydrocortisone can be effective in managing psoriasis symptoms, prolonged use of corticosteroids can lead to skin thinning, and in some cases, rebound flares of psoriasis symptoms.