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What is Topical steroid and explain in detail?
Topical steroids are the topical forms of corticosteroids. Topical steroids are the most commonly prescribed topical medications for the treatment of rash, eczema, and dermatitis. Topical steroids have anti-inflammatory properties and are classified based on their skin vasoconstrictive abilities. There are numerous topical steroid products. All the preparations in each class have the same anti-inflammatory properties but essentially differ in base and price.
Side effects may occur from long-term topical steroid use.

Medical uses
Weaker topical steroids are utilized for thin-skinned and sensitive areas, especially areas under occlusion, such as the armpit, groin, buttock crease, and breast folds. Weaker steroids are used on the face, eyelids, diaper area, perianal skin, and intertrigo of the groin or body folds. Moderate steroids are used for atopic dermatitis, nummular eczema, xerotic eczema, lichen sclerosis et atrophicus of the vulva, scabies (after scabiecide) and severe dermatitis. Strong steroids are used for psoriasis, lichen planus, discoid lupus, chapped feet, lichen simplex chronicus, severe poison ivy exposure, alopecia areata, nummular eczema, and severe atopic dermatitis in adults.To prevent tachyphylaxis, a topical steroid is often prescribed to be used on a week on, week off routine. Some recommend using the topical steroid for 3 consecutive days on, followed by 4 consecutive days off. Long-term use of topical steroids can lead to secondary infection with fungus or bacteria (see tinea incognito), skin atrophy, telangiectasia (prominent blood vessels), skin bruising and fragility.The use of the finger tip unit may be helpful in guiding how much topical steroid is required to cover different areas of the body.

Adverse effects
Hypothalamic–pituitary–adrenal axis (HPA) suppression
Cushings syndrome
Diabetes mellitus
Osteoporosis
Topical steroid addiction
Allergic contact dermatitis (see steroid allergy)
Steroid atrophy
Perioral dermatitis: This is a rash that occurs around the mouth and the eye region that has been associated with topical steroids.
Ocular effects: Topical steroid drops are frequently used after eye surgery but can also raise intraocular pressure (IOP) and increase the risk of glaucoma, cataract, retinopathy as well as systemic adverse effects.
Tachyphylaxis: The acute development of tolerance to the action of a drug after repeated doses