Skin drugs

Question 1

Applications

Answer 1

Viscous solutions, emulsions, or suspensions for application to the skin (including the scalp) or nails.

Question 2

Collodions

Answer 2

Painted on the skin and allowed to dry to leave a flexible film over the site of application

Question 3

Creams

Answer 3

Emulsions of oil and water and are generally well absorbed into the skin. Dry out the skin.

May contain Abx/active ingreadients

Question 4

Gels

Answer 4

Active ingredients in hydrophilic or hydrophobic bases; they generally have a high water content. Gels are particularly suitable for application to the face and scalp.

Question 5

Lotions

Answer 5

Cooling effect

May be preferred for hairy areas
May contain insoluble powders which leave a deposit on the skin surface

Question 6

Oitments

Answer 6

greasy preparations, normally anhydrous and insoluble in water.

Moisturise the skin (encourage hydration).

Used for chronic, dry lesions.

Question 7

Quantities of dermatological preparations used in prescribing

Answer 7

Used for an adult, BD for 7 days

Question 8

Emollients

Answer 8

Soothe, smooth and hydrate the skin

Indicated for all dry or scaling disorders

Effects short lived, frequent application required even when condition improves.

Should be applied in direction of hair growth to reduce risk of folliculitis.

Question 9

Commonc causes of pruirtis

Answer 9

Systemic disease (obstructive jaundice, endocrine disease, renal disease)

Skin disease (psoriasis, eczema, urticaria, scabies)

Drug hypersensiticitiy.

Question 10

Treatment for pruritis

Answer 10

Calamine

Crotamiton

Doxepin hydrochloride (xepin)

levomenthol