1. please be aware of the difference between a dermatologist and an aesthetic medicine doctor.

a dermatologist is a skin specialist. look for his basic degree,.ie, MD or MBBS or MBBCH BAO. next look for the post grad degree,i.e., MRCP OR FRCP. a dermatologist can also have lasers or other aesthetic treatment.

an aesthetic medicine doctor is just a GP with a diploma in aesthetic medicine or diploma in skin/derm. this diploma helps the GP with more knowledge of skin diseases. these type of GPs might only practise normal GP work or might only concentrate on aesthetic medicine. they are not allowed to call themselves specialists, most don't.

dr christina is one such doctor. that young chinese doctor near pyramid, should be dr edwin chang is also one such doctor. they are GPs in the first place but they provide skin treatment mainly focussing on the aesthetic side but they can treat skin diseases just like any other GPs. yes they might know more about dermatology than some other GPs but most GPs can treat common skin diseases anyways, e.g., acne vulgaris, psoriasis, eczema, etc.

then why do they have dermatologists?
well, most skin problems look more or less the same. treatment is generally limited to creams and tablets.
dermatologists would have studied more into various skin diseases and would have seen many other patients with skin problems. so they can easily identify or sort out those skin diseases which tend to look similar. some more serious skin diseases need to be hospitalized, so some are based in the hospitals or would have admitting rights in the hospitals. patients also feel they are in good hands with the dermatologist as some skin diseases are chronic problems, e.g, psoriasis or eczema, they won't be cured but their problem might be in better control with the dermatologist.