<unk>  is defined as a collection of pus in the dermis or subcutaneous tissue and appears as a swollen, red, tender, and fluctuant mass, often with surrounding cellulitis and may occur in any part of the body. Although, there is a rare type of sterile skin<unk>  that is secondary to injection mostly in diabetic patients who use insulin. diagnosis is clinical and consist of a painful, tender, indurated, and usually erythematous nodule or mass that is varying in size. Systemic sign and symptoms are rare except for sever and multiple<unk>  especially in immunocompromised patients. Treatment is, incision and drainage associated with antibiotics.
Cutaneous abscess
Cutaneous lymphoma
Pediculosis capitis
Gangrene 
Gangrene
Larva migrans
Dactylitis
Cutaneous larva migrans