blood investigation is done to corroborate the clinical findings. What is needed first is examination of the affected area. The boils
will need a course of oral and / or topical antibiotics. Diabetes
need to be ruled out if the history of boil is recurrent. And what you think of as psoriasis
, it can be commented on only after examination of the affected area.
the lesions you call psoriasis, are they scaly and do they increase in winter?