Ochronosis:- ochronosis is the bluish black discoloration of tissues, such as the ear cartilage and the ocular tissue (sclera, between the margin of the cornea and the outer or inner canthus), seen with alkaptonuria (autosomal recessive metabolic disorder caused by deficiency of homogentisic acid oxidase). It can also occur from exposure to various substances, such as phenol, trinitrophenol, resorcinol, mercury, picric acid, benzene, hydroquinone and antimalarials.
Definition :- it is an infection of hair follicle caused by staphylococcus aureus. Causative organism:- Staphylococcus aureus Common site :- 1. Face 2. Head 3. Neck 4. Back 5. Axilla Pre disposing factors :- 1. Diabetes Melitus 2. Poor hygiene 3. Low immunity Clinical features :- 1. Painfull red indurated swelling 2. Tenderness 3. Oedema 4. Small pustule 5. If burst greenish discharge found Fate :- 1. Resolve 2. Abscess formation 3. Septicaemia 4. Pyemia 5. Cavernous sinus thrombosis Complications :- 1. Cellulitis 2. Infection of the regional lymph nodes Investigation :- 1. CBC 2. ESR 3. Blood sugar Treatment :- 1. Maintain hygiene 2. Improve general health 3. Remove the affected hair 4. Antibiotics- if multiple boils found usually not required. 5. After escape of pus the part should be clean 6. If recurrent boil appear exclude the diabetes
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