1 The results of prophylactic measures for femoral head AVN have considerable variation, but certain generalizations can safely be stated. 2  Namely, the clinical results of core decompression alone deteriorate with more advanced lesions.
1 Melasma is very common skin ailment. It can occur to anyone, but young women with brownish tone are more likely to contract with it.  The condition is often linked with female hormonal changes. Change in level of estrogen and progesterone may cause melasma.
These include: 1  Daily sunscreen use. 2  Since sunlight is one of the biggest triggers for melasma, daily sunscreen use is non-negotiable to keep it at bay. 3  Choose a sunscreen with broad-spectrum protection with an SPF of 30 or higher. 4  Outdoor hats. 5  Broad-brimmed hats help keep rays off vulnerable parts of the face.