Skin<unk>  appear as open craters, often round, with layers of skin that have eroded. The skin around the<unk> may be red, swollen, and tender. Patients may feel pain on the skin around the<unk>  and fluid may ooze from the<unk>  In some cases,<unk>  can bleed and, rarely, patients experience fever.<unk>  sometimes seem not to heal; healing, if it does occur, tends to be slow.<unk>  that heal within 12 weeks are usually classified as acute, and longer-lasting ones as chronic.<unk>  develop in stages. In stage 1 the skin is red with soft underlying tissue. In the second stage the redness of the skin becomes more pronounced, swelling appears, and there may be some blisters and loss of outer skin layers. During the next stage, the skin may become necrotic down through the deep layers of skin, and the fat beneath the skin may become exposed and visible. In stage 4, deeper necrosis usually occurs, the fat underneath the skin is completely exposed, and the muscle may also become exposed. In the last two stages the sore may cause a deeper loss of fat and necrosis of the muscle; in severe cases it can extend down to bone level, destruction of the bone may begin, and there may be sepsis of joints. Chronic<unk>  may be painful. Most patients complain of constant pain at night and during the day. Chronic<unk> symptoms usually include increasing pain, friable granulation tissue, foul odour, and wound breakdown instead of healing. Symptoms tend to worsen once the wound has become infected. Venous skin<unk>  that may appear on the lower leg, above the calf or on the lower ankle usually cause achy and swollen legs. If these<unk>  become infected they may develop an unpleasant odour, increased tenderness and redness. Before the<unk> establishes definitively, there may be a dark red or purple skin over the affected area as well as a thickening, drying, and itchy skin. Although skin<unk>  do not seem of great concern at a first glance, they are worrying conditions especially in people suffering from diabetes, as they are at risk of developing diabetic neuropathy.<unk>  may also appear on the cheeks, soft palate, the tongue, and on the inside of the lower lip. These<unk>  usually last from 7 to 14 days and can be painful. Discharges Different types of discharges from<unk> are: * Serous, usually seen in healing<unk> * Purulent, seen in infected<unk>  Yellow creamy discharge is observed in staphylococcal infection; bloody opalescent discharge in streptococcal infection, while greenish discharge is seen in the case of Pseudomonas infection * Bloody (sanguineous), usually seen in malignant<unk>  and in healing<unk>  with healthy granulation tissue * Seropurulent * Serosanguinous * Serous with sulphur granules, seen in actinomycosis * Yellowish, as seen in tuberculous<unk>
Ulcer 
Clinic
Papule
Dermal patch
Nail 
Syringe
Periwound
Crown 