A pulmonary embolism (PE) occurs when clotted blood from a DVT comes loose from the leg veins and passes up to the lungs. Circulation to parts of the lungs is cut off which can be very dangerous. Fatal PE may have an incidence of 2% after hip fracture and may contribute to illness and mortality in other cases.Mental confusion is extremely common following a hip fracture. It usually clears completely, but the disorienting experience of pain, immobility, loss of independence, moving to a strange place, surgery, and drugs combine to cause delirium or accentuate pre-existing dementia. Urinary tract infection (UTI) can occur. Patients are immobilized and in bed for many days; they are frequently catheterised, commonly causing infection. Prolonged immobilization and difficulty moving make it hard to avoid pressure sores on the sacrum and heels of patients with hip fractures. Whenever possible, early mobilization is advocated; otherwise, alternating pressure mattresses should be used. Risk factors
Hip fracture following a fall is likely to be a pathological fracture. The most common causes of weakness in bone are:
Osteoporosis. Other metabolic bone diseases such as Pagets disease, osteomalacia, osteopetrosis and osteogenesis imperfecta. Stress fractures may occur in the hip region with metabolic bone disease. Elevated levels of homocysteine, a toxic natural amino acid. Benign or malignant primary bone tumors are rare causes of hip fractures. Metastatic cancer deposits in the proximal femur may weaken the bone and cause a pathological hip fracture. Infection in the bone is a rare cause of hip fracture. Tobacco smoking (associated with osteoporosis).
Photodermatitis, sometimes referred to as sun poisoning or photoallergy, is a form of allergic contact dermatitis in which the allergen must be activated by light to sensitize the allergic response, and to cause a rash or other systemic effects on subsequent exposure. The second and subsequent exposures produce photoallergic skin conditions which are often eczematous. It is distinct from sunburn. Signs and symptoms
Photodermatitis may result in swelling, difficulty breathing, a burning sensation, a red itchy rash sometimes resembling small blisters, and peeling of the skin. Nausea may also occur. There may also be blotches where the itching may persist for long periods of time. In these areas an unsightly orange to brown tint may form, usually near or on the face. Causes
Many medications and conditions can cause sun sensitivity, including:

Sulfa used in some drugs, among them some antibiotics, diuretics, COX-2 inhibitors, and diabetes drugs. Psoralens, coal tars, photo-active dyes (eosin, acridine orange)
Musk ambrette, methylcoumarin, lemon oil (may be present in fragrances)
PABA (found in sunscreens)
Oxybenzone (UVA and UVB chemical blocker also in sunscreens) 
Salicylanilide (found in industrial cleaners)
St Johns Wort
Hexachlorophene (found in some prescription antibacterial soaps)
Tetracycline antibiotics (e.g., tetracycline, doxycycline, minocycline)
Benzoyl peroxide
Retinoids (e.g., isotretinoin)
Some NSAIDs (e.g., ibuprofen, naproxen sodium)
Fluoroquinolone antibiotic: Sparfloxacin in 2% of cases
Amiodarone, used to treat atrial fibrillation
PellagraPhotodermatitis can also be caused by plants such as Ammi majus, parsnip, giant hogweed (Heracleum mantegazzianum), common rue (Ruta graveolens), and Dictamnus, a genus of flowering plants in the family Rutaceae with a single species Dictamnus albus, commonly called the burning bush.